331312112123131 has 4 divisors (see below), whose sum is σ = 331312936416264. Its totient is φ = 331311287830000.

The previous prime is 331312112123129. The next prime is 331312112123141. The reversal of 331312112123131 is 131321211213133.

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 331312112123131 - 2¹ = 331312112123129 is a prime.

It is a super-2 number, since 2×331312112123131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331312112123131.

It is not an unprimeable number, because it can be changed into a prime (331312112123141) 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, 411543370 + ... + 412347631.

It is an arithmetic number, because the mean of its divisors is an integer number (82828234104066).

Almost surely, 2^{331312112123131} is an apocalyptic number.

331312112123131 is a deficient number, since it is larger than the sum of its proper divisors (824293133).

331312112123131 is an equidigital number, since it uses as much as digits as its factorization.

331312112123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824293132.

The product of its digits is 1944, while the sum is 28.

Adding to 331312112123131 its reverse (131321211213133), we get a palindrome (462633323336264).

The spelling of 331312112123131 in words is "three hundred thirty-one trillion, three hundred twelve billion, one hundred twelve million, one hundred twenty-three thousand, one hundred thirty-one".