23421305291 has 2 divisors, whose sum is σ = 23421305292. Its totient is φ = 23421305290.

The previous prime is 23421305273. The next prime is 23421305389. The reversal of 23421305291 is 19250312432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23421305291 - 2³⁴ = 6241436107 is a prime.

It is not a weakly prime, because it can be changed into another prime (23421305251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710652645 + 11710652646.

It is an arithmetic number, because the mean of its divisors is an integer number (11710652646).

Almost surely, 2^23421305291 is an apocalyptic number.

23421305291 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421305291 is an equidigital number, since it uses as much as digits as its factorization.

23421305291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 23421305291 in words is "twenty-three billion, four hundred twenty-one million, three hundred five thousand, two hundred ninety-one".