591131 has 2 divisors, whose sum is σ = 591132. Its totient is φ = 591130.

The previous prime is 591127. The next prime is 591137. The reversal of 591131 is 131195.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 591131 - 2² = 591127 is a prime.

It is a super-2 number, since 2×591131² = 698871718322, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 591131.

It is not a weakly prime, because it can be changed into another prime (591137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295565 + 295566.

It is an arithmetic number, because the mean of its divisors is an integer number (295566).

2⁵⁹¹¹³¹ is an apocalyptic number.

591131 is a deficient number, since it is larger than the sum of its proper divisors (1).

591131 is an equidigital number, since it uses as much as digits as its factorization.

591131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135, while the sum is 20.

The square root of 591131 is about 768.8504405930. The cubic root of 591131 is about 83.9256238849.

It can be divided in two parts, 591 and 131, that multiplied together give a triangular number (77421 = T₃₉₃).

The spelling of 591131 in words is "five hundred ninety-one thousand, one hundred thirty-one".