131931103 has 2 divisors, whose sum is σ = 131931104. Its totient is φ = 131931102.

The previous prime is 131931091. The next prime is 131931113. The reversal of 131931103 is 301139131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131931103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131931113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65965551 + 65965552.

It is an arithmetic number, because the mean of its divisors is an integer number (65965552).

Almost surely, 2^131931103 is an apocalyptic number.

131931103 is a deficient number, since it is larger than the sum of its proper divisors (1).

131931103 is an equidigital number, since it uses as much as digits as its factorization.

131931103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 131931103 is about 11486.1265446625. The cubic root of 131931103 is about 509.0757359549.

The spelling of 131931103 in words is "one hundred thirty-one million, nine hundred thirty-one thousand, one hundred three".