231312021230001 has 4 divisors (see below), whose sum is σ = 308416028306672. Its totient is φ = 154208014153332.

The previous prime is 231312021229997. The next prime is 231312021230029. The reversal of 231312021230001 is 100032120213132.

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 not a de Polignac number, because 231312021230001 - 2² = 231312021229997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231312021230001.

It is not an unprimeable number, because it can be changed into a prime (231312021230041) 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, 38552003538331 + ... + 38552003538336.

It is an arithmetic number, because the mean of its divisors is an integer number (77104007076668).

Almost surely, 2^{231312021230001} is an apocalyptic number.

It is an amenable number.

231312021230001 is a deficient number, since it is larger than the sum of its proper divisors (77104007076671).

231312021230001 is an equidigital number, since it uses as much as digits as its factorization.

231312021230001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77104007076670.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231312021230001 its reverse (100032120213132), we get a palindrome (331344141443133).

The spelling of 231312021230001 in words is "two hundred thirty-one trillion, three hundred twelve billion, twenty-one million, two hundred thirty thousand, one".