123331331 has 8 divisors (see below), whose sum is σ = 125430624. Its totient is φ = 121242240.

The previous prime is 123331301. The next prime is 123331333. The reversal of 123331331 is 133133321.

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 123331331 - 2¹⁸ = 123069187 is a prime.

It is a super-2 number, since 2×123331331² = 30421234412463122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123331333) 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, 24155 + ... + 28811.

It is an arithmetic number, because the mean of its divisors is an integer number (15678828).

Almost surely, 2^123331331 is an apocalyptic number.

123331331 is a deficient number, since it is larger than the sum of its proper divisors (2099293).

123331331 is an equidigital number, since it uses as much as digits as its factorization.

123331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101.

The product of its digits is 486, while the sum is 20.

The square root of 123331331 is about 11105.4640155196. The cubic root of 123331331 is about 497.7651336277.

Adding to 123331331 its reverse (133133321), we get a palindrome (256464652).

The spelling of 123331331 in words is "one hundred twenty-three million, three hundred thirty-one thousand, three hundred thirty-one".