31854834156 has 48 divisors (see below), whose sum is σ = 76610596608. Its totient is φ = 10297089600.

The previous prime is 31854834149. The next prime is 31854834223. The reversal of 31854834156 is 65143845813.

It is a super-3 number, since 3×31854834156³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 254490 + ... + 358433.

It is an arithmetic number, because the mean of its divisors is an integer number (1596054096).

Almost surely, 2^31854834156 is an apocalyptic number.

It is an amenable number.

31854834156 is an abundant number, since it is smaller than the sum of its proper divisors (44755762452).

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

31854834156 is a wasteful number, since it uses less digits than its factorization.

31854834156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613062 (or 613060 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The spelling of 31854834156 in words is "thirty-one billion, eight hundred fifty-four million, eight hundred thirty-four thousand, one hundred fifty-six".