131338739 has 4 divisors (see below), whose sum is σ = 150101424. Its totient is φ = 112576056.

The previous prime is 131338687. The next prime is 131338759. The reversal of 131338739 is 937833131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131338739 is a prime.

It is a super-2 number, since 2×131338739² = 34499728724220242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131338759) 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, 9381332 + ... + 9381345.

It is an arithmetic number, because the mean of its divisors is an integer number (37525356).

Almost surely, 2^131338739 is an apocalyptic number.

131338739 is a deficient number, since it is larger than the sum of its proper divisors (18762685).

131338739 is an equidigital number, since it uses as much as digits as its factorization.

131338739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18762684.

The product of its digits is 40824, while the sum is 38.

The square root of 131338739 is about 11460.3114704619. The cubic root of 131338739 is about 508.3126846640.

The spelling of 131338739 in words is "one hundred thirty-one million, three hundred thirty-eight thousand, seven hundred thirty-nine".