13831957 has 2 divisors, whose sum is σ = 13831958. Its totient is φ = 13831956.

The previous prime is 13831919. The next prime is 13831963. The reversal of 13831957 is 75913831.

It is a happy number.

13831957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9205156 + 4626801 = 3034^2 + 2151^2 .

It is a cyclic number.

It is not a de Polignac number, because 13831957 - 2¹⁹ = 13307669 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13832957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6915978 + 6915979.

It is an arithmetic number, because the mean of its divisors is an integer number (6915979).

Almost surely, 2^13831957 is an apocalyptic number.

It is an amenable number.

13831957 is a deficient number, since it is larger than the sum of its proper divisors (1).

13831957 is an equidigital number, since it uses as much as digits as its factorization.

13831957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 13831957 is about 3719.1339045536. The cubic root of 13831957 is about 240.0460386217.

The spelling of 13831957 in words is "thirteen million, eight hundred thirty-one thousand, nine hundred fifty-seven".