23235681 has 32 divisors (see below), whose sum is σ = 37509120. Its totient is φ = 12507264.

The previous prime is 23235679. The next prime is 23235683. The reversal of 23235681 is 18653232.

It is an interprime number because it is at equal distance from previous prime (23235679) and next prime (23235683).

It is not a de Polignac number, because 23235681 - 2¹ = 23235679 is a prime.

It is a super-2 number, since 2×23235681² = 1079793743067522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23235683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34930 + ... + 35588.

It is an arithmetic number, because the mean of its divisors is an integer number (1172160).

Almost surely, 2^23235681 is an apocalyptic number.

23235681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23235681 is a deficient number, since it is larger than the sum of its proper divisors (14273439).

23235681 is a wasteful number, since it uses less digits than its factorization.

23235681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765.

The product of its digits is 8640, while the sum is 30.

The square root of 23235681 is about 4820.3403406814. The cubic root of 23235681 is about 285.3547690331.

The spelling of 23235681 in words is "twenty-three million, two hundred thirty-five thousand, six hundred eighty-one".