31823404956 has 72 divisors (see below), whose sum is σ = 95975364240. Its totient is φ = 9092399904.

The previous prime is 31823404933. The next prime is 31823404961. The reversal of 31823404956 is 65940432813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3001455 + ... + 3012038.

It is an arithmetic number, because the mean of its divisors is an integer number (1332991170).

Almost surely, 2^31823404956 is an apocalyptic number.

31823404956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31823404956 is an abundant number, since it is smaller than the sum of its proper divisors (64151959284).

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

31823404956 is a wasteful number, since it uses less digits than its factorization.

31823404956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013520 (or 6013505 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 31823404956 in words is "thirty-one billion, eight hundred twenty-three million, four hundred four thousand, nine hundred fifty-six".