123315331 has 8 divisors (see below), whose sum is σ = 133754544. Its totient is φ = 113230080.

The previous prime is 123315329. The next prime is 123315373. The reversal of 123315331 is 133513321.

It is a happy number.

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 123315331 - 2¹ = 123315329 is a prime.

It is a super-2 number, since 2×123315331² = 30413341719279122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123315391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87765 + ... + 89158.

It is an arithmetic number, because the mean of its divisors is an integer number (16719318).

Almost surely, 2^123315331 is an apocalyptic number.

123315331 is a deficient number, since it is larger than the sum of its proper divisors (10439213).

123315331 is a wasteful number, since it uses less digits than its factorization.

123315331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176981.

The product of its digits is 810, while the sum is 22.

The square root of 123315331 is about 11104.7436260366. The cubic root of 123315331 is about 497.7436073686.

Adding to 123315331 its reverse (133513321), we get a palindrome (256828652).

The spelling of 123315331 in words is "one hundred twenty-three million, three hundred fifteen thousand, three hundred thirty-one".