23977131 has 8 divisors (see below), whose sum is σ = 32252880. Its totient is φ = 15843072.

The previous prime is 23977127. The next prime is 23977133. The reversal of 23977131 is 13177932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23977131 - 2² = 23977127 is a prime.

It is a super-2 number, since 2×23977131² = 1149805621982322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 23977092 and 23977101.

It is not an unprimeable number, because it can be changed into a prime (23977133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35026 + ... + 35703.

It is an arithmetic number, because the mean of its divisors is an integer number (4031610).

Almost surely, 2^23977131 is an apocalyptic number.

23977131 is a deficient number, since it is larger than the sum of its proper divisors (8275749).

23977131 is a wasteful number, since it uses less digits than its factorization.

23977131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70845.

The product of its digits is 7938, while the sum is 33.

The square root of 23977131 is about 4896.6448717464. The cubic root of 23977131 is about 288.3582660417.

The spelling of 23977131 in words is "twenty-three million, nine hundred seventy-seven thousand, one hundred thirty-one".