31272996 has 48 divisors (see below), whose sum is σ = 79168320. Its totient is φ = 9569280.

The previous prime is 31272973. The next prime is 31273007. The reversal of 31272996 is 69927213.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6495 + ... + 10233.

It is an arithmetic number, because the mean of its divisors is an integer number (1649340).

Almost surely, 2^31272996 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 31272996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39584160).

31272996 is an abundant number, since it is smaller than the sum of its proper divisors (47895324).

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

31272996 is a wasteful number, since it uses less digits than its factorization.

31272996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804 (or 3802 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 31272996 is about 5592.2263902671. The cubic root of 31272996 is about 315.0575052485.

The spelling of 31272996 in words is "thirty-one million, two hundred seventy-two thousand, nine hundred ninety-six".