131913737 has 2 divisors, whose sum is σ = 131913738. Its totient is φ = 131913736.

The previous prime is 131913709. The next prime is 131913823. The reversal of 131913737 is 737319131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74926336 + 56987401 = 8656^2 + 7549^2 .

It is a cyclic number.

It is not a de Polignac number, because 131913737 - 2⁶ = 131913673 is a prime.

It is a Chen prime.

It is equal to p_7480574 and since 131913737 and 7480574 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 131913697 and 131913706.

It is not a weakly prime, because it can be changed into another prime (131913137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65956868 + 65956869.

It is an arithmetic number, because the mean of its divisors is an integer number (65956869).

Almost surely, 2^131913737 is an apocalyptic number.

It is an amenable number.

131913737 is a deficient number, since it is larger than the sum of its proper divisors (1).

131913737 is an equidigital number, since it uses as much as digits as its factorization.

131913737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11907, while the sum is 35.

The square root of 131913737 is about 11485.3705643310. The cubic root of 131913737 is about 509.0533985456.

The spelling of 131913737 in words is "one hundred thirty-one million, nine hundred thirteen thousand, seven hundred thirty-seven".