30311131131 has 12 divisors (see below), whose sum is σ = 43906780008. Its totient is φ = 20150173824.

The previous prime is 30311131099. The next prime is 30311131139. The reversal of 30311131131 is 13113111303.

It is not a de Polignac number, because 30311131131 - 2⁵ = 30311131099 is a prime.

It is a super-2 number, since 2×30311131131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30311131139) 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 11 ways as a sum of consecutive naturals, for example, 4767225 + ... + 4773578.

It is an arithmetic number, because the mean of its divisors is an integer number (3658898334).

Almost surely, 2^30311131131 is an apocalyptic number.

30311131131 is a deficient number, since it is larger than the sum of its proper divisors (13595648877).

30311131131 is a wasteful number, since it uses less digits than its factorization.

30311131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9541162 (or 9541159 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 30311131131 its reverse (13113111303), we get a palindrome (43424242434).

The spelling of 30311131131 in words is "thirty billion, three hundred eleven million, one hundred thirty-one thousand, one hundred thirty-one".