23020032991 has 2 divisors, whose sum is σ = 23020032992. Its totient is φ = 23020032990.

The previous prime is 23020032953. The next prime is 23020033021. The reversal of 23020032991 is 19923002032.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23020032991 - 2²¹ = 23017935839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23020035991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510016495 + 11510016496.

It is an arithmetic number, because the mean of its divisors is an integer number (11510016496).

Almost surely, 2^23020032991 is an apocalyptic number.

23020032991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020032991 is an equidigital number, since it uses as much as digits as its factorization.

23020032991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 23020032991 in words is "twenty-three billion, twenty million, thirty-two thousand, nine hundred ninety-one".