31234343231 has 24 divisors (see below), whose sum is σ = 38948747904. Its totient is φ = 24524117280.

The previous prime is 31234343213. The next prime is 31234343233. The reversal of 31234343231 is 13234343213.

It is a de Polignac number, because none of the positive numbers 2^k-31234343231 is a prime.

It is a super-2 number, since 2×31234343231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31234343194 and 31234343203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234343233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54200 + ... + 255746.

It is an arithmetic number, because the mean of its divisors is an integer number (1622864496).

Almost surely, 2^31234343231 is an apocalyptic number.

31234343231 is a deficient number, since it is larger than the sum of its proper divisors (7714404673).

31234343231 is a wasteful number, since it uses less digits than its factorization.

31234343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201711 (or 201698 counting only the distinct ones).

The product of its digits is 15552, while the sum is 29.

Adding to 31234343231 its reverse (13234343213), we get a palindrome (44468686444).

The spelling of 31234343231 in words is "thirty-one billion, two hundred thirty-four million, three hundred forty-three thousand, two hundred thirty-one".