31364361 has 48 divisors (see below), whose sum is σ = 54756480. Its totient is φ = 17690400.

The previous prime is 31364357. The next prime is 31364407. The reversal of 31364361 is 16346313.

31364361 is a `hidden beast` number, since 3 + 13 + 643 + 6 + 1 = 666.

It is not a de Polignac number, because 31364361 - 2² = 31364357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31364461) 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 47 ways as a sum of consecutive naturals, for example, 199695 + ... + 199851.

It is an arithmetic number, because the mean of its divisors is an integer number (1140760).

Almost surely, 2^31364361 is an apocalyptic number.

It is an amenable number.

31364361 is a deficient number, since it is larger than the sum of its proper divisors (23392119).

31364361 is a wasteful number, since it uses less digits than its factorization.

31364361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 318 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 31364361 is about 5600.3893614641. The cubic root of 31364361 is about 315.3640236056.

The spelling of 31364361 in words is "thirty-one million, three hundred sixty-four thousand, three hundred sixty-one".