231310312011231 has 16 divisors (see below), whose sum is σ = 309765367532160. Its totient is φ = 153531086597280.

The previous prime is 231310312011197. The next prime is 231310312011239. The reversal of 231310312011231 is 132110213013132.

It is not a de Polignac number, because 231310312011231 - 2⁶ = 231310312011167 is a prime.

It is a super-2 number, since 2×231310312011231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231310312011239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41985796 + ... + 47174438.

It is an arithmetic number, because the mean of its divisors is an integer number (19360335470760).

Almost surely, 2^{231310312011231} is an apocalyptic number.

231310312011231 is a deficient number, since it is larger than the sum of its proper divisors (78455055520929).

231310312011231 is a wasteful number, since it uses less digits than its factorization.

231310312011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253766.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 231310312011231 its reverse (132110213013132), we get a palindrome (363420525024363).

The spelling of 231310312011231 in words is "two hundred thirty-one trillion, three hundred ten billion, three hundred twelve million, eleven thousand, two hundred thirty-one".