123257331 has 12 divisors (see below), whose sum is σ = 178316320. Its totient is φ = 82043280.

The previous prime is 123257297. The next prime is 123257339. The reversal of 123257331 is 133752321.

123257331 is a `hidden beast` number, since 1 + 2 + 325 + 7 + 331 = 666.

It is not a de Polignac number, because 123257331 - 2¹⁴ = 123240947 is a prime.

It is a super-2 number, since 2×123257331² = 30384739290487122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123257295 and 123257304.

It is not an unprimeable number, because it can be changed into a prime (123257339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4411 + ... + 16308.

Almost surely, 2^123257331 is an apocalyptic number.

123257331 is a deficient number, since it is larger than the sum of its proper divisors (55058989).

123257331 is a wasteful number, since it uses less digits than its factorization.

123257331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21386 (or 21383 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 123257331 is about 11102.1318223123. The cubic root of 123257331 is about 497.6655590668.

The spelling of 123257331 in words is "one hundred twenty-three million, two hundred fifty-seven thousand, three hundred thirty-one".