31020364 has 6 divisors (see below), whose sum is σ = 54285644. Its totient is φ = 15510180.

The previous prime is 31020361. The next prime is 31020373. The reversal of 31020364 is 46302013.

It is not an unprimeable number, because it can be changed into a prime (31020361) 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 as a sum of consecutive naturals, namely, 3877542 + ... + 3877549.

Almost surely, 2^31020364 is an apocalyptic number.

It is an amenable number.

31020364 is a deficient number, since it is larger than the sum of its proper divisors (23265280).

31020364 is a wasteful number, since it uses less digits than its factorization.

31020364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7755095 (or 7755093 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 31020364 is about 5569.5928037874. The cubic root of 31020364 is about 314.2068362855.

Adding to 31020364 its reverse (46302013), we get a palindrome (77322377).

The spelling of 31020364 in words is "thirty-one million, twenty thousand, three hundred sixty-four".