131640763 has 2 divisors, whose sum is σ = 131640764. Its totient is φ = 131640762.

The previous prime is 131640727. The next prime is 131640767. The reversal of 131640763 is 367046131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131640763 - 2¹⁷ = 131509691 is a prime.

It is not a weakly prime, because it can be changed into another prime (131640767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65820381 + 65820382.

It is an arithmetic number, because the mean of its divisors is an integer number (65820382).

Almost surely, 2^131640763 is an apocalyptic number.

131640763 is a deficient number, since it is larger than the sum of its proper divisors (1).

131640763 is an equidigital number, since it uses as much as digits as its factorization.

131640763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 131640763 is about 11473.4808580483. The cubic root of 131640763 is about 508.7020216875.

Adding to 131640763 its reverse (367046131), we get a palindrome (498686894).

The spelling of 131640763 in words is "one hundred thirty-one million, six hundred forty thousand, seven hundred sixty-three".