131032511 has 2 divisors, whose sum is σ = 131032512. Its totient is φ = 131032510.

The previous prime is 131032507. The next prime is 131032523. The reversal of 131032511 is 115230131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131032511 - 2² = 131032507 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131032511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131032501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65516255 + 65516256.

It is an arithmetic number, because the mean of its divisors is an integer number (65516256).

Almost surely, 2^131032511 is an apocalyptic number.

131032511 is a deficient number, since it is larger than the sum of its proper divisors (1).

131032511 is an equidigital number, since it uses as much as digits as its factorization.

131032511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 131032511 is about 11446.9433037820. The cubic root of 131032511 is about 507.9173184199.

Adding to 131032511 its reverse (115230131), we get a palindrome (246262642).

The spelling of 131032511 in words is "one hundred thirty-one million, thirty-two thousand, five hundred eleven".