231243023421331 has 2 divisors, whose sum is σ = 231243023421332. Its totient is φ = 231243023421330.

The previous prime is 231243023421233. The next prime is 231243023421349. The reversal of 231243023421331 is 133124320342132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231243023421331 - 2¹³ = 231243023413139 is a prime.

It is a super-2 number, since 2×231243023421331² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231243023721331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115621511710665 + 115621511710666.

It is an arithmetic number, because the mean of its divisors is an integer number (115621511710666).

Almost surely, 2^{231243023421331} is an apocalyptic number.

231243023421331 is a deficient number, since it is larger than the sum of its proper divisors (1).

231243023421331 is an equidigital number, since it uses as much as digits as its factorization.

231243023421331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 231243023421331 its reverse (133124320342132), we get a palindrome (364367343763463).

The spelling of 231243023421331 in words is "two hundred thirty-one trillion, two hundred forty-three billion, twenty-three million, four hundred twenty-one thousand, three hundred thirty-one".