120631512431131 has 16 divisors (see below), whose sum is σ = 131864439117600. Its totient is φ = 109678036900608.

The previous prime is 120631512431117. The next prime is 120631512431141. The reversal of 120631512431131 is 131134215136021.

It is a cyclic number.

It is not a de Polignac number, because 120631512431131 - 2³³ = 120622922496539 is a prime.

It is a super-2 number, since 2×120631512431131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120631512431141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194655 + ... + 15533863.

It is an arithmetic number, because the mean of its divisors is an integer number (8241527444850).

Almost surely, 2^{120631512431131} is an apocalyptic number.

120631512431131 is a deficient number, since it is larger than the sum of its proper divisors (11232926686469).

120631512431131 is a wasteful number, since it uses less digits than its factorization.

120631512431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15348318.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 120631512431131 its reverse (131134215136021), we get a palindrome (251765727567152).

The spelling of 120631512431131 in words is "one hundred twenty trillion, six hundred thirty-one billion, five hundred twelve million, four hundred thirty-one thousand, one hundred thirty-one".