31630468 has 12 divisors (see below), whose sum is σ = 55685952. Its totient is φ = 15720200.

The previous prime is 31630463. The next prime is 31630471. The reversal of 31630468 is 86403613.

It is not an unprimeable number, because it can be changed into a prime (31630463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23008 + ... + 24343.

It is an arithmetic number, because the mean of its divisors is an integer number (4640496).

Almost surely, 2^31630468 is an apocalyptic number.

It is an amenable number.

31630468 is a deficient number, since it is larger than the sum of its proper divisors (24055484).

31630468 is a wasteful number, since it uses less digits than its factorization.

31630468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47522 (or 47520 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 31630468 is about 5624.0970830881. The cubic root of 31630468 is about 316.2534019329.

The spelling of 31630468 in words is "thirty-one million, six hundred thirty thousand, four hundred sixty-eight".