123471233257 has 8 divisors (see below), whose sum is σ = 135242325000. Its totient is φ = 112201039104.

The previous prime is 123471233233. The next prime is 123471233269. The reversal of 123471233257 is 752332174321.

It can be written as a sum of positive squares in 4 ways, for example, as 10433396736 + 113037836521 = 102144^2 + 336211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123471233257 - 2²³ = 123462844649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123471233057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125223882 + ... + 125224867.

It is an arithmetic number, because the mean of its divisors is an integer number (16905290625).

Almost surely, 2^123471233257 is an apocalyptic number.

123471233257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

123471233257 is a deficient number, since it is larger than the sum of its proper divisors (11771091743).

123471233257 is a wasteful number, since it uses less digits than its factorization.

123471233257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250448795.

The product of its digits is 211680, while the sum is 40.

The spelling of 123471233257 in words is "one hundred twenty-three billion, four hundred seventy-one million, two hundred thirty-three thousand, two hundred fifty-seven".