23678431 has 16 divisors (see below), whose sum is σ = 28712448. Its totient is φ = 19087200.

The previous prime is 23678393. The next prime is 23678437. The reversal of 23678431 is 13487632.

23678431 = 1294² + 1295² + ... + 1307².

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23678431 - 2⁹ = 23677919 is a prime.

It is a super-2 number, since 2×23678431² = 1121336189243522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23678437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8616 + ... + 11026.

It is an arithmetic number, because the mean of its divisors is an integer number (1794528).

Almost surely, 2^23678431 is an apocalyptic number.

23678431 is a deficient number, since it is larger than the sum of its proper divisors (5034017).

23678431 is a wasteful number, since it uses less digits than its factorization.

23678431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502.

The product of its digits is 24192, while the sum is 34.

The square root of 23678431 is about 4866.0488078111. The cubic root of 23678431 is about 287.1558316362.

The spelling of 23678431 in words is "twenty-three million, six hundred seventy-eight thousand, four hundred thirty-one".