31494402 has 24 divisors (see below), whose sum is σ = 69527484. Its totient is φ = 10299744.

The previous prime is 31494401. The next prime is 31494427. The reversal of 31494402 is 20449413.

It can be written as a sum of positive squares in 2 ways, for example, as 31371201 + 123201 = 5601^2 + 351^2 .

It is not an unprimeable number, because it can be changed into a prime (31494401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15553 + ... + 17460.

Almost surely, 2^31494402 is an apocalyptic number.

31494402 is an abundant number, since it is smaller than the sum of its proper divisors (38033082).

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

31494402 is a wasteful number, since it uses less digits than its factorization.

31494402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33074 (or 33071 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 31494402 is about 5611.9873485246. The cubic root of 31494402 is about 315.7992703189.

The spelling of 31494402 in words is "thirty-one million, four hundred ninety-four thousand, four hundred two".