231023000231321 has 4 divisors (see below), whose sum is σ = 241067478502272. Its totient is φ = 220978521960372.

The previous prime is 231023000231311. The next prime is 231023000231323. The reversal of 231023000231321 is 123132000320132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-231023000231321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 10044478270927 = 231023000231321 / (2 + 3 + 1 + 0 + 2 + 3 + 0 + 0 + 0 + 2 + 3 + 1 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231023000231323) 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, 5022239135441 + ... + 5022239135486.

It is an arithmetic number, because the mean of its divisors is an integer number (60266869625568).

Almost surely, 2^{231023000231321} is an apocalyptic number.

It is an amenable number.

231023000231321 is a deficient number, since it is larger than the sum of its proper divisors (10044478270951).

231023000231321 is a wasteful number, since it uses less digits than its factorization.

231023000231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10044478270950.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231023000231321 its reverse (123132000320132), we get a palindrome (354155000551453).

The spelling of 231023000231321 in words is "two hundred thirty-one trillion, twenty-three billion, two hundred thirty-one thousand, three hundred twenty-one".