30311210131 has 6 divisors (see below), whose sum is σ = 31990501932. Its totient is φ = 28715882940.

The previous prime is 30311210129. The next prime is 30311210159. The reversal of 30311210131 is 13101211303.

It is not a de Polignac number, because 30311210131 - 2¹ = 30311210129 is a prime.

It is a super-2 number, since 2×30311210131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30311213131) 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 5 ways as a sum of consecutive naturals, for example, 41981925 + ... + 41982646.

It is an arithmetic number, because the mean of its divisors is an integer number (5331750322).

Almost surely, 2^30311210131 is an apocalyptic number.

30311210131 is a deficient number, since it is larger than the sum of its proper divisors (1679291801).

30311210131 is an equidigital number, since it uses as much as digits as its factorization.

30311210131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83964609 (or 83964590 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 30311210131 its reverse (13101211303), we get a palindrome (43412421434).

The spelling of 30311210131 in words is "thirty billion, three hundred eleven million, two hundred ten thousand, one hundred thirty-one".