161160160331 has 2 divisors, whose sum is σ = 161160160332. Its totient is φ = 161160160330.

The previous prime is 161160160313. The next prime is 161160160397. The reversal of 161160160331 is 133061061161.

Together with previous prime (161160160313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161160160331 is a prime.

It is a super-2 number, since 2×161160160331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161160160294 and 161160160303.

It is not a weakly prime, because it can be changed into another prime (161160160631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80580080165 + 80580080166.

It is an arithmetic number, because the mean of its divisors is an integer number (80580080166).

Almost surely, 2^161160160331 is an apocalyptic number.

161160160331 is a deficient number, since it is larger than the sum of its proper divisors (1).

161160160331 is an equidigital number, since it uses as much as digits as its factorization.

161160160331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 161160160331 in words is "one hundred sixty-one billion, one hundred sixty million, one hundred sixty thousand, three hundred thirty-one".