31490752 has 84 divisors (see below), whose sum is σ = 69677280. Its totient is φ = 14095872.

The previous prime is 31490741. The next prime is 31490773. The reversal of 31490752 is 25709413.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 669993 + ... + 670039.

Almost surely, 2^31490752 is an apocalyptic number.

31490752 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31490752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34838640).

31490752 is an abundant number, since it is smaller than the sum of its proper divisors (38186528).

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

31490752 is a wasteful number, since it uses less digits than its factorization.

31490752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 31490752 is about 5611.6621423603. The cubic root of 31490752 is about 315.7870701416.

The spelling of 31490752 in words is "thirty-one million, four hundred ninety thousand, seven hundred fifty-two".