23981070389 has 2 divisors, whose sum is σ = 23981070390. Its totient is φ = 23981070388.

The previous prime is 23981070329. The next prime is 23981070479. The reversal of 23981070389 is 98307018932.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23981000164 + 70225 = 154858^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 23981070389 - 2⁸ = 23981070133 is a prime.

It is a super-2 number, since 2×23981070389² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23981070329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11990535194 + 11990535195.

It is an arithmetic number, because the mean of its divisors is an integer number (11990535195).

Almost surely, 2^23981070389 is an apocalyptic number.

It is an amenable number.

23981070389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23981070389 is an equidigital number, since it uses as much as digits as its factorization.

23981070389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 23981070389 in words is "twenty-three billion, nine hundred eighty-one million, seventy thousand, three hundred eighty-nine".