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31222113301 = 234728882621
BaseRepresentation
bin11101000100111110…
…111010010000010101
32222120220220200122201
4131010332322100111
51002420330111201
622202050124501
72153466404251
oct350476722025
988526820581
1031222113301
1112272083925
126074280731
132c3762c872
141722893261
15c2b081801
hex744fba415

31222113301 has 8 divisors (see below), whose sum is σ = 33272780544. Its totient is φ = 29229211440.

The previous prime is 31222113287. The next prime is 31222113341. The reversal of 31222113301 is 10331122213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31222113301 - 229 = 30685242389 is a prime.

It is a super-2 number, since 2×312221133012 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222113341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14440230 + ... + 14442391.

It is an arithmetic number, because the mean of its divisors is an integer number (4159097568).

Almost surely, 231222113301 is an apocalyptic number.

It is an amenable number.

31222113301 is a deficient number, since it is larger than the sum of its proper divisors (2050667243).

31222113301 is a wasteful number, since it uses less digits than its factorization.

31222113301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28882691.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31222113301 its reverse (10331122213), we get a palindrome (41553235514).

The spelling of 31222113301 in words is "thirty-one billion, two hundred twenty-two million, one hundred thirteen thousand, three hundred one".

Divisors: 1 23 47 1081 28882621 664300283 1357483187 31222113301