31545032390 has 16 divisors (see below), whose sum is σ = 58612705920. Its totient is φ = 12210980160.

The previous prime is 31545032383. The next prime is 31545032411. The reversal of 31545032390 is 9323054513.

It is a super-2 number, since 2×31545032390² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31545032390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50878775 + ... + 50879394.

It is an arithmetic number, because the mean of its divisors is an integer number (3663294120).

Almost surely, 2^31545032390 is an apocalyptic number.

31545032390 is a deficient number, since it is larger than the sum of its proper divisors (27067673530).

31545032390 is a wasteful number, since it uses less digits than its factorization.

31545032390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101758207.

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 31545032390 in words is "thirty-one billion, five hundred forty-five million, thirty-two thousand, three hundred ninety".