30312131233111 has 32 divisors (see below), whose sum is σ = 37466738749440. Its totient is φ = 23880890952576.

The previous prime is 30312131233079. The next prime is 30312131233157. The reversal of 30312131233111 is 11133213121303.

It is not a de Polignac number, because 30312131233111 - 2⁵ = 30312131233079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30312131236111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20906445 + ... + 22309273.

It is an arithmetic number, because the mean of its divisors is an integer number (1170835585920).

Almost surely, 2^{30312131233111} is an apocalyptic number.

30312131233111 is a deficient number, since it is larger than the sum of its proper divisors (7154607516329).

30312131233111 is a wasteful number, since it uses less digits than its factorization.

30312131233111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403863.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 30312131233111 its reverse (11133213121303), we get a palindrome (41445344354414).

The spelling of 30312131233111 in words is "thirty trillion, three hundred twelve billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred eleven".