31533596140 has 48 divisors (see below), whose sum is σ = 70838796672. Its totient is φ = 11749072896.

The previous prime is 31533596099. The next prime is 31533596173. The reversal of 31533596140 is 4169533513.

It is a junction number, because it is equal to n+sod(n) for n = 31533596093 and 31533596102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445092 + ... + 511051.

It is an arithmetic number, because the mean of its divisors is an integer number (1475808264).

Almost surely, 2^31533596140 is an apocalyptic number.

It is an amenable number.

31533596140 is an abundant number, since it is smaller than the sum of its proper divisors (39305200532).

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

31533596140 is a wasteful number, since it uses less digits than its factorization.

31533596140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956266 (or 956264 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 31533596140 in words is "thirty-one billion, five hundred thirty-three million, five hundred ninety-six thousand, one hundred forty".