31303111304 has 32 divisors (see below), whose sum is σ = 60601443840. Its totient is φ = 15142972800.

The previous prime is 31303111303. The next prime is 31303111309. The reversal of 31303111304 is 40311130313.

It is a super-2 number, since 2×31303111304² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31303111303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195052 + ... + 1220964.

It is an arithmetic number, because the mean of its divisors is an integer number (1893795120).

Almost surely, 2^31303111304 is an apocalyptic number.

It is an amenable number.

31303111304 is a deficient number, since it is larger than the sum of its proper divisors (29298332536).

31303111304 is a wasteful number, since it uses less digits than its factorization.

31303111304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30821 (or 30817 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31303111304 its reverse (40311130313), we get a palindrome (71614241617).

The spelling of 31303111304 in words is "thirty-one billion, three hundred three million, one hundred eleven thousand, three hundred four".