31490264 has 16 divisors (see below), whose sum is σ = 63586320. Its totient is φ = 14533920.

The previous prime is 31490257. The next prime is 31490281. The reversal of 31490264 is 46209413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151292 + ... + 151499.

It is an arithmetic number, because the mean of its divisors is an integer number (3974145).

Almost surely, 2^31490264 is an apocalyptic number.

It is an amenable number.

31490264 is an abundant number, since it is smaller than the sum of its proper divisors (32096056).

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

31490264 is a wasteful number, since it uses less digits than its factorization.

31490264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302810 (or 302806 counting only the distinct ones).

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

The square root of 31490264 is about 5611.6186613133. The cubic root of 31490264 is about 315.7854389231.

Adding to 31490264 its reverse (46209413), we get a palindrome (77699677).

The spelling of 31490264 in words is "thirty-one million, four hundred ninety thousand, two hundred sixty-four".