30131112131 has 4 divisors (see below), whose sum is σ = 30555494064. Its totient is φ = 29706730200.

The previous prime is 30131112127. The next prime is 30131112217. The reversal of 30131112131 is 13121113103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30131112131 - 2² = 30131112127 is a prime.

It is a super-2 number, since 2×30131112131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30131112731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212190860 + ... + 212191001.

It is an arithmetic number, because the mean of its divisors is an integer number (7638873516).

Almost surely, 2^30131112131 is an apocalyptic number.

30131112131 is a deficient number, since it is larger than the sum of its proper divisors (424381933).

30131112131 is an equidigital number, since it uses as much as digits as its factorization.

30131112131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424381932.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 30131112131 its reverse (13121113103), we get a palindrome (43252225234).

The spelling of 30131112131 in words is "thirty billion, one hundred thirty-one million, one hundred twelve thousand, one hundred thirty-one".