31545051000 has 64 divisors (see below), whose sum is σ = 98420568480. Its totient is φ = 8412012800.

The previous prime is 31545050989. The next prime is 31545051001. The reversal of 31545051000 is 15054513.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31545051001) 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 15 ways as a sum of consecutive naturals, for example, 5254509 + ... + 5260508.

Almost surely, 2^31545051000 is an apocalyptic number.

31545051000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31545051000 is an abundant number, since it is smaller than the sum of its proper divisors (66875517480).

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

31545051000 is a wasteful number, since it uses less digits than its factorization.

31545051000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515041 (or 10515027 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 31545051000 in words is "thirty-one billion, five hundred forty-five million, fifty-one thousand".