231021123002311 has 2 divisors, whose sum is σ = 231021123002312. Its totient is φ = 231021123002310.

The previous prime is 231021123002309. The next prime is 231021123002321. The reversal of 231021123002311 is 113200321120132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231021123002311 - 2¹ = 231021123002309 is a prime.

It is a super-2 number, since 2×231021123002311² (a number of 30 digits) contains 22 as substring.

Together with 231021123002309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231021123002321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115510561501155 + 115510561501156.

It is an arithmetic number, because the mean of its divisors is an integer number (115510561501156).

Almost surely, 2^{231021123002311} is an apocalyptic number.

231021123002311 is a deficient number, since it is larger than the sum of its proper divisors (1).

231021123002311 is an equidigital number, since it uses as much as digits as its factorization.

231021123002311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 231021123002311 its reverse (113200321120132), we get a palindrome (344221444122443).

The spelling of 231021123002311 in words is "two hundred thirty-one trillion, twenty-one billion, one hundred twenty-three million, two thousand, three hundred eleven".