23126691 has 16 divisors (see below), whose sum is σ = 35313408. Its totient is φ = 13188000.

The previous prime is 23126683. The next prime is 23126699. The reversal of 23126691 is 19662132.

It is an interprime number because it is at equal distance from previous prime (23126683) and next prime (23126699).

It is not a de Polignac number, because 23126691 - 2³ = 23126683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23126699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13936 + ... + 15506.

It is an arithmetic number, because the mean of its divisors is an integer number (2207088).

Almost surely, 2^23126691 is an apocalyptic number.

23126691 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23126691 is a deficient number, since it is larger than the sum of its proper divisors (12186717).

23126691 is a wasteful number, since it uses less digits than its factorization.

23126691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282.

The product of its digits is 3888, while the sum is 30.

The square root of 23126691 is about 4809.0218340116. The cubic root of 23126691 is about 284.9079049927.

The spelling of 23126691 in words is "twenty-three million, one hundred twenty-six thousand, six hundred ninety-one".