123291297 has 12 divisors (see below), whose sum is σ = 181106640. Its totient is φ = 80800728.

The previous prime is 123291283. The next prime is 123291299. The reversal of 123291297 is 792192321.

It is not a de Polignac number, because 123291297 - 2⁸ = 123291041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123291299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115563 + ... + 116624.

It is an arithmetic number, because the mean of its divisors is an integer number (15092220).

Almost surely, 2^123291297 is an apocalyptic number.

It is an amenable number.

123291297 is a deficient number, since it is larger than the sum of its proper divisors (57815343).

123291297 is a wasteful number, since it uses less digits than its factorization.

123291297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232252 (or 232249 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 123291297 is about 11103.6614231523. The cubic root of 123291297 is about 497.7112687371.

It can be divided in two parts, 1232 and 91297, that added together give a palindrome (92529).

The spelling of 123291297 in words is "one hundred twenty-three million, two hundred ninety-one thousand, two hundred ninety-seven".