31249064 has 48 divisors (see below), whose sum is σ = 74364480. Its totient is φ = 12173280.

The previous prime is 31249051. The next prime is 31249073. The reversal of 31249064 is 46094213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 689 + ... + 7935.

It is an arithmetic number, because the mean of its divisors is an integer number (1549260).

Almost surely, 2^31249064 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 31249064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37182240).

31249064 is an abundant number, since it is smaller than the sum of its proper divisors (43115416).

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

31249064 is a wasteful number, since it uses less digits than its factorization.

31249064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278 (or 7267 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 31249064 is about 5590.0862247375. The cubic root of 31249064 is about 314.9771176794.

The spelling of 31249064 in words is "thirty-one million, two hundred forty-nine thousand, sixty-four".