31492472 has 32 divisors (see below), whose sum is σ = 65156400. Its totient is φ = 14150400.

The previous prime is 31492471. The next prime is 31492477. The reversal of 31492472 is 27429413.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31492471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5822 + ... + 9842.

Almost surely, 2^31492472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31492472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32578200).

31492472 is an abundant number, since it is smaller than the sum of its proper divisors (33663928).

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

31492472 is a wasteful number, since it uses less digits than its factorization.

31492472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127 (or 4123 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 31492472 is about 5611.8153925446. The cubic root of 31492472 is about 315.7928193837.

The spelling of 31492472 in words is "thirty-one million, four hundred ninety-two thousand, four hundred seventy-two".