231012101321 has 4 divisors (see below), whose sum is σ = 231120508944. Its totient is φ = 230903693700.

The previous prime is 231012101251. The next prime is 231012101347. The reversal of 231012101321 is 123101210132.

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 cyclic number.

It is not a de Polignac number, because 231012101321 - 2²² = 231007907017 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 231012101321.

It is not an unprimeable number, because it can be changed into a prime (231012100321) 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, 54200615 + ... + 54204876.

It is an arithmetic number, because the mean of its divisors is an integer number (57780127236).

Almost surely, 2^231012101321 is an apocalyptic number.

It is an amenable number.

231012101321 is a deficient number, since it is larger than the sum of its proper divisors (108407623).

231012101321 is a wasteful number, since it uses less digits than its factorization.

231012101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108407622.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 231012101321 its reverse (123101210132), we get a palindrome (354113311453).

The spelling of 231012101321 in words is "two hundred thirty-one billion, twelve million, one hundred one thousand, three hundred twenty-one".