30311133212 has 48 divisors (see below), whose sum is σ = 57618449280. Its totient is φ = 13895884800.

The previous prime is 30311133197. The next prime is 30311133227. The reversal of 30311133212 is 21233111303.

It is an interprime number because it is at equal distance from previous prime (30311133197) and next prime (30311133227).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1997012 + ... + 2012132.

It is an arithmetic number, because the mean of its divisors is an integer number (1200384360).

Almost surely, 2^30311133212 is an apocalyptic number.

It is an amenable number.

30311133212 is a deficient number, since it is larger than the sum of its proper divisors (27307316068).

30311133212 is a wasteful number, since it uses less digits than its factorization.

30311133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15902 (or 15900 counting only the distinct ones).

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

Adding to 30311133212 its reverse (21233111303), we get a palindrome (51544244515).

The spelling of 30311133212 in words is "thirty billion, three hundred eleven million, one hundred thirty-three thousand, two hundred twelve".