231420213023 has 2 divisors, whose sum is σ = 231420213024. Its totient is φ = 231420213022.

The previous prime is 231420212981. The next prime is 231420213107. The reversal of 231420213023 is 320312024132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231420213023 - 2³² = 227125245727 is a prime.

It is a super-2 number, since 2×231420213023² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231420213023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231420213623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115710106511 + 115710106512.

It is an arithmetic number, because the mean of its divisors is an integer number (115710106512).

Almost surely, 2^231420213023 is an apocalyptic number.

231420213023 is a deficient number, since it is larger than the sum of its proper divisors (1).

231420213023 is an equidigital number, since it uses as much as digits as its factorization.

231420213023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 231420213023 its reverse (320312024132), we get a palindrome (551732237155).

The spelling of 231420213023 in words is "two hundred thirty-one billion, four hundred twenty million, two hundred thirteen thousand, twenty-three".