31845064 has 32 divisors (see below), whose sum is σ = 65592000. Its totient is φ = 14427072.

The previous prime is 31845061. The next prime is 31845071. The reversal of 31845064 is 46054813.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31845061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 8050.

It is an arithmetic number, because the mean of its divisors is an integer number (2049750).

Almost surely, 2^31845064 is an apocalyptic number.

It is an amenable number.

31845064 is an abundant number, since it is smaller than the sum of its proper divisors (33746936).

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

31845064 is a wasteful number, since it uses less digits than its factorization.

31845064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9157 (or 9153 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 31845064 is about 5643.1430958288. The cubic root of 31845064 is about 316.9669946099.

Adding to 31845064 its reverse (46054813), we get a palindrome (77899877).

The spelling of 31845064 in words is "thirty-one million, eight hundred forty-five thousand, sixty-four".