31246072 has 72 divisors (see below), whose sum is σ = 70096320. Its totient is φ = 13041600.

The previous prime is 31246063. The next prime is 31246081. The reversal of 31246072 is 27064213.

It is an interprime number because it is at equal distance from previous prime (31246063) and next prime (31246081).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 163497 + ... + 163687.

It is an arithmetic number, because the mean of its divisors is an integer number (973560).

Almost surely, 2^31246072 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 31246072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35048160).

31246072 is an abundant number, since it is smaller than the sum of its proper divisors (38850248).

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

31246072 is a wasteful number, since it uses less digits than its factorization.

31246072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 31246072 is about 5589.8186017079. The cubic root of 31246072 is about 314.9670646677.

The spelling of 31246072 in words is "thirty-one million, two hundred forty-six thousand, seventy-two".