113431436515 has 4 divisors (see below), whose sum is σ = 136117723824. Its totient is φ = 90745149208.

The previous prime is 113431436513. The next prime is 113431436527. The reversal of 113431436515 is 515634134311.

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

It is a cyclic number.

It is not a de Polignac number, because 113431436515 - 2¹ = 113431436513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113431436513) 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, 11343143647 + ... + 11343143656.

It is an arithmetic number, because the mean of its divisors is an integer number (34029430956).

Almost surely, 2^113431436515 is an apocalyptic number.

113431436515 is a deficient number, since it is larger than the sum of its proper divisors (22686287309).

113431436515 is an equidigital number, since it uses as much as digits as its factorization.

113431436515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22686287308.

The product of its digits is 64800, while the sum is 37.

The spelling of 113431436515 in words is "one hundred thirteen billion, four hundred thirty-one million, four hundred thirty-six thousand, five hundred fifteen".