231012331211331 has 24 divisors (see below), whose sum is σ = 338258192650560. Its totient is φ = 151897309382016.

The previous prime is 231012331211309. The next prime is 231012331211353. The reversal of 231012331211331 is 133112133210132.

231012331211331 is a `hidden beast` number, since 2 + 3 + 1 + 0 + 1 + 2 + 3 + 312 + 11 + 331 = 666.

It is an interprime number because it is at equal distance from previous prime (231012331211309) and next prime (231012331211353).

It is not a de Polignac number, because 231012331211331 - 2⁷ = 231012331211203 is a prime.

It is a super-2 number, since 2×231012331211331² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231012331211295 and 231012331211304.

It is not an unprimeable number, because it can be changed into a prime (231012331211131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85231345 + ... + 87899981.

It is an arithmetic number, because the mean of its divisors is an integer number (14094091360440).

Almost surely, 2^{231012331211331} is an apocalyptic number.

231012331211331 is a deficient number, since it is larger than the sum of its proper divisors (107245861439229).

231012331211331 is a wasteful number, since it uses less digits than its factorization.

231012331211331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800475 (or 2800472 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 231012331211331 its reverse (133112133210132), we get a palindrome (364124464421463).

The spelling of 231012331211331 in words is "two hundred thirty-one trillion, twelve billion, three hundred thirty-one million, two hundred eleven thousand, three hundred thirty-one".