31493774 has 16 divisors (see below), whose sum is σ = 50991360. Its totient is φ = 14502240.

The previous prime is 31493743. The next prime is 31493779. The reversal of 31493774 is 47739413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31493779) 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, 12947 + ... + 15185.

It is an arithmetic number, because the mean of its divisors is an integer number (3186960).

Almost surely, 2^31493774 is an apocalyptic number.

31493774 is a deficient number, since it is larger than the sum of its proper divisors (19497586).

31493774 is a wasteful number, since it uses less digits than its factorization.

31493774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795.

The product of its digits is 63504, while the sum is 38.

The square root of 31493774 is about 5611.9313965871. The cubic root of 31493774 is about 315.7971712870.

The spelling of 31493774 in words is "thirty-one million, four hundred ninety-three thousand, seven hundred seventy-four".