131093731 has 2 divisors, whose sum is σ = 131093732. Its totient is φ = 131093730.

The previous prime is 131093719. The next prime is 131093771. The reversal of 131093731 is 137390131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131093731 - 2⁹ = 131093219 is a prime.

It is a super-2 number, since 2×131093731² = 34371132615000722, 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 131093731.

It is not a weakly prime, because it can be changed into another prime (131093771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65546865 + 65546866.

It is an arithmetic number, because the mean of its divisors is an integer number (65546866).

Almost surely, 2^131093731 is an apocalyptic number.

131093731 is a deficient number, since it is larger than the sum of its proper divisors (1).

131093731 is an equidigital number, since it uses as much as digits as its factorization.

131093731 is an evil number, because the sum of its binary digits is even.

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

The square root of 131093731 is about 11449.6170678324. The cubic root of 131093731 is about 507.9964078424.

The spelling of 131093731 in words is "one hundred thirty-one million, ninety-three thousand, seven hundred thirty-one".