23454204310421 has 2 divisors, whose sum is σ = 23454204310422. Its totient is φ = 23454204310420.

The previous prime is 23454204310391. The next prime is 23454204310457. The reversal of 23454204310421 is 12401340245432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22558605168100 + 895599142321 = 4749590^2 + 946361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23454204310421 is a prime.

It is a super-2 number, since 2×23454204310421² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23454204310021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11727102155210 + 11727102155211.

It is an arithmetic number, because the mean of its divisors is an integer number (11727102155211).

Almost surely, 2^{23454204310421} is an apocalyptic number.

It is an amenable number.

23454204310421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23454204310421 is an equidigital number, since it uses as much as digits as its factorization.

23454204310421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 23454204310421 its reverse (12401340245432), we get a palindrome (35855544555853).

The spelling of 23454204310421 in words is "twenty-three trillion, four hundred fifty-four billion, two hundred four million, three hundred ten thousand, four hundred twenty-one".