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31014322430 = 2571334081673
BaseRepresentation
bin11100111000100110…
…010000000011111110
32222001102220211011112
4130320212100003332
51002004131304210
622125304322022
72145364251050
oct347046200376
988042824145
1031014322430
111217585a533
126016773312
132c035783a0
1417030438d0
15c17bd8d05
hex7389900fe

31014322430 has 32 divisors (see below), whose sum is σ = 68708654784. Its totient is φ = 9815521536.

The previous prime is 31014322411. The next prime is 31014322439. The reversal of 31014322430 is 3422341013.

It is a super-2 number, since 2×310143224302 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31014322396 and 31014322405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31014322439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17039927 + ... + 17041746.

It is an arithmetic number, because the mean of its divisors is an integer number (2147145462).

Almost surely, 231014322430 is an apocalyptic number.

31014322430 is an abundant number, since it is smaller than the sum of its proper divisors (37694332354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31014322430 is a wasteful number, since it uses less digits than its factorization.

31014322430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34081700.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31014322430 its reverse (3422341013), we get a palindrome (34436663443).

The spelling of 31014322430 in words is "thirty-one billion, fourteen million, three hundred twenty-two thousand, four hundred thirty".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 130 182 455 910 34081673 68163346 170408365 238571711 340816730 443061749 477143422 886123498 1192858555 2215308745 2385717110 3101432243 4430617490 6202864486 15507161215 31014322430