23405103409 has 2 divisors, whose sum is σ = 23405103410. Its totient is φ = 23405103408.

The previous prime is 23405103401. The next prime is 23405103437. The reversal of 23405103409 is 90430150432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19112233009 + 4292870400 = 138247^2 + 65520^2 .

It is a cyclic number.

It is not a de Polignac number, because 23405103409 - 2³ = 23405103401 is a prime.

It is not a weakly prime, because it can be changed into another prime (23405103401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11702551704 + 11702551705.

It is an arithmetic number, because the mean of its divisors is an integer number (11702551705).

Almost surely, 2^23405103409 is an apocalyptic number.

It is an amenable number.

23405103409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23405103409 is an equidigital number, since it uses as much as digits as its factorization.

23405103409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 23405103409 in words is "twenty-three billion, four hundred five million, one hundred three thousand, four hundred nine".