123020032331 has 4 divisors (see below), whose sum is σ = 140594322672. Its totient is φ = 105445741992.

The previous prime is 123020032319. The next prime is 123020032337. The reversal of 123020032331 is 133230020321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123020032331 is a prime.

It is a super-2 number, since 2×123020032331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123020032337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8787145160 + ... + 8787145173.

It is an arithmetic number, because the mean of its divisors is an integer number (35148580668).

Almost surely, 2^123020032331 is an apocalyptic number.

123020032331 is a deficient number, since it is larger than the sum of its proper divisors (17574290341).

123020032331 is an equidigital number, since it uses as much as digits as its factorization.

123020032331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574290340.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123020032331 its reverse (133230020321), we get a palindrome (256250052652).

The spelling of 123020032331 in words is "one hundred twenty-three billion, twenty million, thirty-two thousand, three hundred thirty-one".