231100089 has 16 divisors (see below), whose sum is σ = 336414720. Its totient is φ = 139948560.

The previous prime is 231100073. The next prime is 231100099. The reversal of 231100089 is 980001132.

It is not a de Polignac number, because 231100089 - 2⁴ = 231100073 is a prime.

It is a super-2 number, since 2×231100089² = 106814502271615842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231100049) 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, 60144 + ... + 63870.

It is an arithmetic number, because the mean of its divisors is an integer number (21025920).

Almost surely, 2^231100089 is an apocalyptic number.

It is an amenable number.

231100089 is a deficient number, since it is larger than the sum of its proper divisors (105314631).

231100089 is a wasteful number, since it uses less digits than its factorization.

231100089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 231100089 is about 15201.9764833393. The cubic root of 231100089 is about 613.6678495439.

The spelling of 231100089 in words is "two hundred thirty-one million, one hundred thousand, eighty-nine".