23271542989 has 2 divisors, whose sum is σ = 23271542990. Its totient is φ = 23271542988.

The previous prime is 23271542941. The next prime is 23271543079. The reversal of 23271542989 is 98924517232.

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., 21664896100 + 1606646889 = 147190^2 + 40083^2 .

It is a cyclic number.

It is not a de Polignac number, because 23271542989 - 2¹⁵ = 23271510221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23271542909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11635771494 + 11635771495.

It is an arithmetic number, because the mean of its divisors is an integer number (11635771495).

Almost surely, 2^23271542989 is an apocalyptic number.

It is an amenable number.

23271542989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23271542989 is an equidigital number, since it uses as much as digits as its factorization.

23271542989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The spelling of 23271542989 in words is "twenty-three billion, two hundred seventy-one million, five hundred forty-two thousand, nine hundred eighty-nine".