23303030981 has 2 divisors, whose sum is σ = 23303030982. Its totient is φ = 23303030980.

The previous prime is 23303030951. The next prime is 23303030999. The reversal of 23303030981 is 18903030332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15714878881 + 7588152100 = 125359^2 + 87110^2 .

It is a cyclic number.

It is not a de Polignac number, because 23303030981 - 2⁶ = 23303030917 is a prime.

It is a super-2 number, since 2×23303030981² (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 (23303030921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11651515490 + 11651515491.

It is an arithmetic number, because the mean of its divisors is an integer number (11651515491).

Almost surely, 2^23303030981 is an apocalyptic number.

It is an amenable number.

23303030981 is a deficient number, since it is larger than the sum of its proper divisors (1).

23303030981 is an equidigital number, since it uses as much as digits as its factorization.

23303030981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 23303030981 in words is "twenty-three billion, three hundred three million, thirty thousand, nine hundred eighty-one".