31320322232 has 32 divisors (see below), whose sum is σ = 63108130320. Its totient is φ = 14518986240.

The previous prime is 31320322223. The next prime is 31320322261. The reversal of 31320322232 is 23222302313.

It is a junction number, because it is equal to n+sod(n) for n = 31320322198 and 31320322207.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1709519 + ... + 1727742.

Almost surely, 2^31320322232 is an apocalyptic number.

It is an amenable number.

31320322232 is an abundant number, since it is smaller than the sum of its proper divisors (31787808088).

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

31320322232 is a wasteful number, since it uses less digits than its factorization.

31320322232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437351 (or 3437347 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 31320322232 its reverse (23222302313), we get a palindrome (54542624545).

The spelling of 31320322232 in words is "thirty-one billion, three hundred twenty million, three hundred twenty-two thousand, two hundred thirty-two".