31000748 has 6 divisors (see below), whose sum is σ = 54251316. Its totient is φ = 15500372.

The previous prime is 31000693. The next prime is 31000751. The reversal of 31000748 is 84700013.

It is a happy number.

It is a super-2 number, since 2×31000748² = 1922092753119008, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 3875090 + ... + 3875097.

It is an arithmetic number, because the mean of its divisors is an integer number (9041886).

Almost surely, 2^31000748 is an apocalyptic number.

It is an amenable number.

31000748 is a deficient number, since it is larger than the sum of its proper divisors (23250568).

31000748 is a wasteful number, since it uses less digits than its factorization.

31000748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7750191 (or 7750189 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 31000748 is about 5567.8315348078. The cubic root of 31000748 is about 314.1405918347.

The spelling of 31000748 in words is "thirty-one million, seven hundred forty-eight", and thus it is an aban number.