23082991 has 4 divisors (see below), whose sum is σ = 24440832. Its totient is φ = 21725152.

The previous prime is 23082973. The next prime is 23083069. The reversal of 23082991 is 19928032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23082991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23082901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678895 + ... + 678928.

It is an arithmetic number, because the mean of its divisors is an integer number (6110208).

Almost surely, 2^23082991 is an apocalyptic number.

23082991 is a deficient number, since it is larger than the sum of its proper divisors (1357841).

23082991 is a wasteful number, since it uses less digits than its factorization.

23082991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357840.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 23082991 is about 4804.4761420992. The cubic root of 23082991 is about 284.7283386525.

The spelling of 23082991 in words is "twenty-three million, eighty-two thousand, nine hundred ninety-one".