731316123 has 12 divisors (see below), whose sum is σ = 1057923880. Its totient is φ = 486815616.

The previous prime is 731316121. The next prime is 731316161. The reversal of 731316123 is 321613137.

It is not a de Polignac number, because 731316123 - 2¹ = 731316121 is a prime.

It is a super-2 number, since 2×731316123² = 1069646543519502258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731316121) 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, 54313 + ... + 66426.

Almost surely, 2^731316123 is an apocalyptic number.

731316123 is a deficient number, since it is larger than the sum of its proper divisors (326607757).

731316123 is a wasteful number, since it uses less digits than its factorization.

731316123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121418 (or 121415 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 731316123 is about 27042.8571530451. The cubic root of 731316123 is about 900.9521294036.

It can be divided in two parts, 7313 and 16123, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 731316123 in words is "seven hundred thirty-one million, three hundred sixteen thousand, one hundred twenty-three".