39713131 has 2 divisors, whose sum is σ = 39713132. Its totient is φ = 39713130.

The previous prime is 39713117. The next prime is 39713137. The reversal of 39713131 is 13131793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39713131 - 2¹³ = 39704939 is a prime.

It is a super-2 number, since 2×39713131² = 3154265547646322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39713131.

It is not a weakly prime, because it can be changed into another prime (39713137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19856565 + 19856566.

It is an arithmetic number, because the mean of its divisors is an integer number (19856566).

Almost surely, 2^39713131 is an apocalyptic number.

39713131 is a deficient number, since it is larger than the sum of its proper divisors (1).

39713131 is an equidigital number, since it uses as much as digits as its factorization.

39713131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701, while the sum is 28.

The square root of 39713131 is about 6301.8355262574. The cubic root of 39713131 is about 341.1756619103.

The spelling of 39713131 in words is "thirty-nine million, seven hundred thirteen thousand, one hundred thirty-one".