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401223214323031 = 31431731739841959
BaseRepresentation
bin101101100111010010000111…
…1001010100101010101010111
31221121121120020122211000122011
41123032210033022211111113
5410042120120331314111
63541155222231045051
7150340264165055422
oct13316441712452527
91847546218730564
10401223214323031
1110692989a688221
1238bbb8b6810787
13142b5257425379
147111442cd09b9
15315bb0ad62021
hex16ce90f2a5557

401223214323031 has 16 divisors (see below), whose sum is σ = 426247361464320. Its totient is φ = 377058549137760.

The previous prime is 401223214322989. The next prime is 401223214323083. The reversal of 401223214323031 is 130323412322104.

It is not a de Polignac number, because 401223214323031 - 223 = 401223205934423 is a prime.

It is a super-2 number, since 2×4012232143230312 (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401223214322984 and 401223214323002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401223214323131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869690371 + ... + 870151588.

It is an arithmetic number, because the mean of its divisors is an integer number (26640460091520).

Almost surely, 2401223214323031 is an apocalyptic number.

401223214323031 is a deficient number, since it is larger than the sum of its proper divisors (25024147141289).

401223214323031 is a wasteful number, since it uses less digits than its factorization.

401223214323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739842206.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 401223214323031 its reverse (130323412322104), we get a palindrome (531546626645135).

The spelling of 401223214323031 in words is "four hundred one trillion, two hundred twenty-three billion, two hundred fourteen million, three hundred twenty-three thousand, thirty-one".

Divisors: 1 31 43 173 1333 5363 7439 230609 1739841959 53935100729 74813204237 300992658907 2319209331347 9330772426117 12942684333001 401223214323031