31493564 has 12 divisors (see below), whose sum is σ = 58014600. Its totient is φ = 14917968.

The previous prime is 31493557. The next prime is 31493569. The reversal of 31493564 is 46539413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31493569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207119 + ... + 207270.

It is an arithmetic number, because the mean of its divisors is an integer number (4834550).

Almost surely, 2^31493564 is an apocalyptic number.

It is an amenable number.

31493564 is a deficient number, since it is larger than the sum of its proper divisors (26521036).

31493564 is a wasteful number, since it uses less digits than its factorization.

31493564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414412 (or 414410 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 31493564 is about 5611.9126864198. The cubic root of 31493564 is about 315.7964693752.

The spelling of 31493564 in words is "thirty-one million, four hundred ninety-three thousand, five hundred sixty-four".