331022220131 has 2 divisors, whose sum is σ = 331022220132. Its totient is φ = 331022220130.

The previous prime is 331022220107. The next prime is 331022220157. The reversal of 331022220131 is 131022220133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331022220131 - 2²² = 331018025827 is a prime.

It is a super-2 number, since 2×331022220131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331022220101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165511110065 + 165511110066.

It is an arithmetic number, because the mean of its divisors is an integer number (165511110066).

Almost surely, 2^331022220131 is an apocalyptic number.

331022220131 is a deficient number, since it is larger than the sum of its proper divisors (1).

331022220131 is an equidigital number, since it uses as much as digits as its factorization.

331022220131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 331022220131 its reverse (131022220133), we get a palindrome (462044440264).

The spelling of 331022220131 in words is "three hundred thirty-one billion, twenty-two million, two hundred twenty thousand, one hundred thirty-one".