113412143 has 16 divisors (see below), whose sum is σ = 124916736. Its totient is φ = 102332160.

The previous prime is 113412137. The next prime is 113412157. The reversal of 113412143 is 341214311.

It is a cyclic number.

It is not a de Polignac number, because 113412143 - 2²⁰ = 112363567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113412743) 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, 120053 + ... + 120993.

It is an arithmetic number, because the mean of its divisors is an integer number (7807296).

Almost surely, 2^113412143 is an apocalyptic number.

113412143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

113412143 is a deficient number, since it is larger than the sum of its proper divisors (11504593).

113412143 is a wasteful number, since it uses less digits than its factorization.

113412143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

The product of its digits is 288, while the sum is 20.

The square root of 113412143 is about 10649.5137447679. The cubic root of 113412143 is about 484.0458699668.

Adding to 113412143 its reverse (341214311), we get a palindrome (454626454).

It can be divided in two parts, 11 and 3412143, that multiplied together give a palindrome (37533573).

The spelling of 113412143 in words is "one hundred thirteen million, four hundred twelve thousand, one hundred forty-three".