331131122111131 has 4 divisors (see below), whose sum is σ = 331212023928592. Its totient is φ = 331050220293672.

The previous prime is 331131122111113. The next prime is 331131122111143. The reversal of 331131122111131 is 131111221131133.

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 331131122111131 - 2⁹ = 331131122110619 is a prime.

It is a super-2 number, since 2×331131122111131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331131122111096 and 331131122111105.

It is not an unprimeable number, because it can be changed into a prime (331131122118131) 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, 40450902591 + ... + 40450910776.

It is an arithmetic number, because the mean of its divisors is an integer number (82803005982148).

Almost surely, 2^{331131122111131} is an apocalyptic number.

331131122111131 is a deficient number, since it is larger than the sum of its proper divisors (80901817461).

331131122111131 is an equidigital number, since it uses as much as digits as its factorization.

331131122111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80901817460.

The product of its digits is 324, while the sum is 25.

Adding to 331131122111131 its reverse (131111221131133), we get a palindrome (462242343242264).

The spelling of 331131122111131 in words is "three hundred thirty-one trillion, one hundred thirty-one billion, one hundred twenty-two million, one hundred eleven thousand, one hundred thirty-one".