123012331 has 4 divisors (see below), whose sum is σ = 132474832. Its totient is φ = 113549832.

The previous prime is 123012319. The next prime is 123012343. The reversal of 123012331 is 133210321.

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 (123012319) and next prime (123012343).

It is a cyclic number.

It is not a de Polignac number, because 123012331 - 2⁷ = 123012203 is a prime.

It is a super-2 number, since 2×123012331² = 30264067156107122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123012431) 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, 4731231 + ... + 4731256.

It is an arithmetic number, because the mean of its divisors is an integer number (33118708).

Almost surely, 2^123012331 is an apocalyptic number.

123012331 is a deficient number, since it is larger than the sum of its proper divisors (9462501).

123012331 is an equidigital number, since it uses as much as digits as its factorization.

123012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9462500.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123012331 is about 11091.0924168902. The cubic root of 123012331 is about 497.3356018512.

Adding to 123012331 its reverse (133210321), we get a palindrome (256222652).

The spelling of 123012331 in words is "one hundred twenty-three million, twelve thousand, three hundred thirty-one".