321125023 has 12 divisors (see below), whose sum is σ = 344683080. Its totient is φ = 299047536.

The previous prime is 321125017. The next prime is 321125047. The reversal of 321125023 is 320521123.

It is a de Polignac number, because none of the positive numbers 2^k-321125023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321125003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13761 + ... + 28837.

It is an arithmetic number, because the mean of its divisors is an integer number (28723590).

Almost surely, 2^321125023 is an apocalyptic number.

321125023 is a deficient number, since it is larger than the sum of its proper divisors (23558057).

321125023 is a wasteful number, since it uses less digits than its factorization.

321125023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15174 (or 15155 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 321125023 is about 17919.9615791999. The cubic root of 321125023 is about 684.7910087571.

Adding to 321125023 its reverse (320521123), we get a palindrome (641646146).

The spelling of 321125023 in words is "three hundred twenty-one million, one hundred twenty-five thousand, twenty-three".