131872739 has 2 divisors, whose sum is σ = 131872740. Its totient is φ = 131872738.

The previous prime is 131872733. The next prime is 131872747. The reversal of 131872739 is 937278131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131872739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131872696 and 131872705.

It is not a weakly prime, because it can be changed into another prime (131872733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65936369 + 65936370.

It is an arithmetic number, because the mean of its divisors is an integer number (65936370).

Almost surely, 2^131872739 is an apocalyptic number.

131872739 is a deficient number, since it is larger than the sum of its proper divisors (1).

131872739 is an equidigital number, since it uses as much as digits as its factorization.

131872739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 131872739 is about 11483.5856334161. The cubic root of 131872739 is about 509.0006561646. Note that the first 3 decimals are identical.

The spelling of 131872739 in words is "one hundred thirty-one million, eight hundred seventy-two thousand, seven hundred thirty-nine".