23020035991 has 2 divisors, whose sum is σ = 23020035992. Its totient is φ = 23020035990.

The previous prime is 23020035949. The next prime is 23020036001. The reversal of 23020035991 is 19953002032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23020035991 - 2¹³ = 23020027799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23020035911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510017995 + 11510017996.

It is an arithmetic number, because the mean of its divisors is an integer number (11510017996).

Almost surely, 2^23020035991 is an apocalyptic number.

23020035991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020035991 is an equidigital number, since it uses as much as digits as its factorization.

23020035991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The spelling of 23020035991 in words is "twenty-three billion, twenty million, thirty-five thousand, nine hundred ninety-one".