231212010121231 has 8 divisors (see below), whose sum is σ = 231310768941504. Its totient is φ = 231113252557440.

The previous prime is 231212010121181. The next prime is 231212010121249. The reversal of 231212010121231 is 132121010212132.

It is a happy number.

231212010121231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231212010121231 - 2²⁹ = 231211473250319 is a prime.

It is a super-2 number, since 2×231212010121231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231212010131231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682792746 + ... + 683131288.

It is an arithmetic number, because the mean of its divisors is an integer number (28913846117688).

Almost surely, 2^{231212010121231} is an apocalyptic number.

231212010121231 is a deficient number, since it is larger than the sum of its proper divisors (98758820273).

231212010121231 is a wasteful number, since it uses less digits than its factorization.

231212010121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628241.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 231212010121231 its reverse (132121010212132), we get a palindrome (363333020333363).

Subtracting from 231212010121231 its reverse (132121010212132), we obtain a palindrome (99090999909099).

The spelling of 231212010121231 in words is "two hundred thirty-one trillion, two hundred twelve billion, ten million, one hundred twenty-one thousand, two hundred thirty-one".