131188723 has 2 divisors, whose sum is σ = 131188724. Its totient is φ = 131188722.

The previous prime is 131188697. The next prime is 131188763. The reversal of 131188723 is 327881131.

It is a weak prime.

It is an emirp because it is prime and its reverse (327881131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131188723 - 2¹⁷ = 131057651 is a prime.

It is not a weakly prime, because it can be changed into another prime (131188763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65594361 + 65594362.

It is an arithmetic number, because the mean of its divisors is an integer number (65594362).

Almost surely, 2^131188723 is an apocalyptic number.

131188723 is a deficient number, since it is larger than the sum of its proper divisors (1).

131188723 is an equidigital number, since it uses as much as digits as its factorization.

131188723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 131188723 is about 11453.7645776400. The cubic root of 131188723 is about 508.1190781984.

The spelling of 131188723 in words is "one hundred thirty-one million, one hundred eighty-eight thousand, seven hundred twenty-three".