31315064 has 16 divisors (see below), whose sum is σ = 64053720. Its totient is φ = 14234080.

The previous prime is 31315013. The next prime is 31315069. The reversal of 31315064 is 46051313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31315069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177839 + ... + 178014.

Almost surely, 2^31315064 is an apocalyptic number.

It is an amenable number.

31315064 is an abundant number, since it is smaller than the sum of its proper divisors (32738656).

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

31315064 is a wasteful number, since it uses less digits than its factorization.

31315064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355870 (or 355866 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 31315064 is about 5595.9864188541. The cubic root of 31315064 is about 315.1987122780.

Adding to 31315064 its reverse (46051313), we get a palindrome (77366377).

The spelling of 31315064 in words is "thirty-one million, three hundred fifteen thousand, sixty-four".