23231154421 has 2 divisors, whose sum is σ = 23231154422. Its totient is φ = 23231154420.

The previous prime is 23231154409. The next prime is 23231154503. The reversal of 23231154421 is 12445113232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13809540196 + 9421614225 = 117514^2 + 97065^2 .

It is a cyclic number.

It is not a de Polignac number, because 23231154421 - 2⁷ = 23231154293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23231154421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23231154521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11615577210 + 11615577211.

It is an arithmetic number, because the mean of its divisors is an integer number (11615577211).

Almost surely, 2^23231154421 is an apocalyptic number.

It is an amenable number.

23231154421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23231154421 is an equidigital number, since it uses as much as digits as its factorization.

23231154421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 28.

Adding to 23231154421 its reverse (12445113232), we get a palindrome (35676267653).

The spelling of 23231154421 in words is "twenty-three billion, two hundred thirty-one million, one hundred fifty-four thousand, four hundred twenty-one".