31264641 has 6 divisors (see below), whose sum is σ = 45160050. Its totient is φ = 20843088.

The previous prime is 31264627. The next prime is 31264661. The reversal of 31264641 is 14646213.

31264641 is a `hidden beast` number, since 3 + 12 + 6 + 4 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24295041 + 6969600 = 4929^2 + 2640^2 .

It is not a de Polignac number, because 31264641 - 2⁶ = 31264577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31264601) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1736916 + ... + 1736933.

It is an arithmetic number, because the mean of its divisors is an integer number (7526675).

Almost surely, 2^31264641 is an apocalyptic number.

It is an amenable number.

31264641 is a deficient number, since it is larger than the sum of its proper divisors (13895409).

31264641 is a wasteful number, since it uses less digits than its factorization.

31264641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473855 (or 3473852 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 31264641 is about 5591.4793212530. The cubic root of 31264641 is about 315.0294454712.

The spelling of 31264641 in words is "thirty-one million, two hundred sixty-four thousand, six hundred forty-one".