88131921 has 8 divisors (see below), whose sum is σ = 117552960. Its totient is φ = 58732752.

The previous prime is 88131889. The next prime is 88131947. The reversal of 88131921 is 12913188.

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

It is not a de Polignac number, because 88131921 - 2⁵ = 88131889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88131971) 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, 11191 + ... + 17363.

It is an arithmetic number, because the mean of its divisors is an integer number (14694120).

Almost surely, 2^88131921 is an apocalyptic number.

It is an amenable number.

88131921 is a deficient number, since it is larger than the sum of its proper divisors (29421039).

88131921 is a wasteful number, since it uses less digits than its factorization.

88131921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10935.

The product of its digits is 3456, while the sum is 33.

The square root of 88131921 is about 9387.8602993440. The cubic root of 88131921 is about 445.0181720475.

The spelling of 88131921 in words is "eighty-eight million, one hundred thirty-one thousand, nine hundred twenty-one".