31240964 has 6 divisors (see below), whose sum is σ = 54671694. Its totient is φ = 15620480.

The previous prime is 31240949. The next prime is 31240973. The reversal of 31240964 is 46904213.

It can be written as a sum of positive squares in only one way, i.e., 26214400 + 5026564 = 5120^2 + 2242^2 .

It is a super-3 number, since 3×31240964³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3905117 + ... + 3905124.

It is an arithmetic number, because the mean of its divisors is an integer number (9111949).

Almost surely, 2^31240964 is an apocalyptic number.

It is an amenable number.

31240964 is a deficient number, since it is larger than the sum of its proper divisors (23430730).

31240964 is a wasteful number, since it uses less digits than its factorization.

31240964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810245 (or 7810243 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 31240964 is about 5589.3616809078. The cubic root of 31240964 is about 314.9499004895.

The spelling of 31240964 in words is "thirty-one million, two hundred forty thousand, nine hundred sixty-four".