131940662587 has 2 divisors, whose sum is σ = 131940662588. Its totient is φ = 131940662586.

The previous prime is 131940662537. The next prime is 131940662641. The reversal of 131940662587 is 785266049131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131940662587 is a prime.

It is not a weakly prime, because it can be changed into another prime (131940662527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65970331293 + 65970331294.

It is an arithmetic number, because the mean of its divisors is an integer number (65970331294).

It is a 1-persistent number, because it is pandigital, but 2⋅131940662587 = 263881325174 is not.

Almost surely, 2^131940662587 is an apocalyptic number.

131940662587 is a deficient number, since it is larger than the sum of its proper divisors (1).

131940662587 is an equidigital number, since it uses as much as digits as its factorization.

131940662587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 131940662587 in words is "one hundred thirty-one billion, nine hundred forty million, six hundred sixty-two thousand, five hundred eighty-seven".