113131433 has 4 divisors (see below), whose sum is σ = 113202180. Its totient is φ = 113060688.

The previous prime is 113131429. The next prime is 113131441. The reversal of 113131433 is 334131311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28270489 + 84860944 = 5317^2 + 9212^2 .

It is a cyclic number.

It is not a de Polignac number, because 113131433 - 2² = 113131429 is a prime.

It is a super-2 number, since 2×113131433² = 25597442265266978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113131483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32918 + ... + 36191.

It is an arithmetic number, because the mean of its divisors is an integer number (28300545).

Almost surely, 2^113131433 is an apocalyptic number.

It is an amenable number.

113131433 is a deficient number, since it is larger than the sum of its proper divisors (70747).

113131433 is an equidigital number, since it uses as much as digits as its factorization.

113131433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70746.

The product of its digits is 324, while the sum is 20.

The square root of 113131433 is about 10636.3261044404. The cubic root of 113131433 is about 483.6461809180.

Adding to 113131433 its reverse (334131311), we get a palindrome (447262744).

The spelling of 113131433 in words is "one hundred thirteen million, one hundred thirty-one thousand, four hundred thirty-three".