113891143 has 12 divisors (see below), whose sum is σ = 124266232. Its totient is φ = 104284800.

The previous prime is 113891137. The next prime is 113891159. The reversal of 113891143 is 341198311.

It is not a de Polignac number, because 113891143 - 2¹⁷ = 113760071 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113891243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5368 + ... + 16018.

Almost surely, 2^113891143 is an apocalyptic number.

113891143 is a deficient number, since it is larger than the sum of its proper divisors (10375089).

113891143 is a wasteful number, since it uses less digits than its factorization.

113891143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10722 (or 10705 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 113891143 is about 10671.9793384358. The cubic root of 113891143 is about 484.7263741567.

The spelling of 113891143 in words is "one hundred thirteen million, eight hundred ninety-one thousand, one hundred forty-three".