131532311 has 2 divisors, whose sum is σ = 131532312. Its totient is φ = 131532310.

The previous prime is 131532301. The next prime is 131532337. The reversal of 131532311 is 113235131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131532311 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131532301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65766155 + 65766156.

It is an arithmetic number, because the mean of its divisors is an integer number (65766156).

Almost surely, 2^131532311 is an apocalyptic number.

131532311 is a deficient number, since it is larger than the sum of its proper divisors (1).

131532311 is an equidigital number, since it uses as much as digits as its factorization.

131532311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 20.

The square root of 131532311 is about 11468.7536811983. The cubic root of 131532311 is about 508.5622855657.

Adding to 131532311 its reverse (113235131), we get a palindrome (244767442).

The spelling of 131532311 in words is "one hundred thirty-one million, five hundred thirty-two thousand, three hundred eleven".