123731323 has 4 divisors (see below), whose sum is σ = 127722688. Its totient is φ = 119739960.

The previous prime is 123731299. The next prime is 123731347. The reversal of 123731323 is 323137321.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (123731299) and next prime (123731347).

It is a cyclic number.

It is not a de Polignac number, because 123731323 - 2²¹ = 121634171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123731623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995636 + ... + 1995697.

It is an arithmetic number, because the mean of its divisors is an integer number (31930672).

Almost surely, 2^123731323 is an apocalyptic number.

123731323 is a deficient number, since it is larger than the sum of its proper divisors (3991365).

123731323 is an equidigital number, since it uses as much as digits as its factorization.

123731323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991364.

The product of its digits is 2268, while the sum is 25.

The square root of 123731323 is about 11123.4582302448. The cubic root of 123731323 is about 498.3026753646.

Adding to 123731323 its reverse (323137321), we get a palindrome (446868644).

The spelling of 123731323 in words is "one hundred twenty-three million, seven hundred thirty-one thousand, three hundred twenty-three".