31320076 has 12 divisors (see below), whose sum is σ = 55025208. Its totient is φ = 15598592.

The previous prime is 31320073. The next prime is 31320083. The reversal of 31320076 is 67002313.

It is not an unprimeable number, because it can be changed into a prime (31320071) 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 3 ways as a sum of consecutive naturals, for example, 14206 + ... + 16261.

It is an arithmetic number, because the mean of its divisors is an integer number (4585434).

Almost surely, 2^31320076 is an apocalyptic number.

It is an amenable number.

31320076 is a deficient number, since it is larger than the sum of its proper divisors (23705132).

31320076 is a wasteful number, since it uses less digits than its factorization.

31320076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30728 (or 30726 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 31320076 is about 5596.4342218952. The cubic root of 31320076 is about 315.2155273128.

Adding to 31320076 its reverse (67002313), we get a palindrome (98322389).

The spelling of 31320076 in words is "thirty-one million, three hundred twenty thousand, seventy-six".