123270131 has 2 divisors, whose sum is σ = 123270132. Its totient is φ = 123270130.

The previous prime is 123270127. The next prime is 123270181. The reversal of 123270131 is 131072321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123270131 - 2² = 123270127 is a prime.

It is a super-2 number, since 2×123270131² = 30391050393514322, which contains 22 as substring.

It is equal to p_7017203 and since 123270131 and 7017203 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (123270101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61635065 + 61635066.

It is an arithmetic number, because the mean of its divisors is an integer number (61635066).

Almost surely, 2^123270131 is an apocalyptic number.

123270131 is a deficient number, since it is larger than the sum of its proper divisors (1).

123270131 is an equidigital number, since it uses as much as digits as its factorization.

123270131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 123270131 is about 11102.7082732097. The cubic root of 123270131 is about 497.6827856247.

The spelling of 123270131 in words is "one hundred twenty-three million, two hundred seventy thousand, one hundred thirty-one".