123213230331 has 4 divisors (see below), whose sum is σ = 164284307112. Its totient is φ = 82142153552.

The previous prime is 123213230317. The next prime is 123213230341. The reversal of 123213230331 is 133032312321.

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

It is a cyclic number.

It is not a de Polignac number, because 123213230331 - 2⁹ = 123213229819 is a prime.

It is a super-2 number, since 2×123213230331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123213230341) 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, 20535538386 + ... + 20535538391.

It is an arithmetic number, because the mean of its divisors is an integer number (41071076778).

Almost surely, 2^123213230331 is an apocalyptic number.

123213230331 is a deficient number, since it is larger than the sum of its proper divisors (41071076781).

123213230331 is an equidigital number, since it uses as much as digits as its factorization.

123213230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41071076780.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 123213230331 its reverse (133032312321), we get a palindrome (256245542652).

The spelling of 123213230331 in words is "one hundred twenty-three billion, two hundred thirteen million, two hundred thirty thousand, three hundred thirty-one".