31534980 has 24 divisors (see below), whose sum is σ = 88298112. Its totient is φ = 8409312.

The previous prime is 31534961. The next prime is 31534981. The reversal of 31534980 is 8943513.

It is not an unprimeable number, because it can be changed into a prime (31534981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262732 + ... + 262851.

It is an arithmetic number, because the mean of its divisors is an integer number (3679088).

Almost surely, 2^31534980 is an apocalyptic number.

31534980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31534980 is an abundant number, since it is smaller than the sum of its proper divisors (56763132).

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

31534980 is a wasteful number, since it uses less digits than its factorization.

31534980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525595 (or 525593 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 31534980 is about 5615.6014815868. The cubic root of 31534980 is about 315.9348394193.

The spelling of 31534980 in words is "thirty-one million, five hundred thirty-four thousand, nine hundred eighty".