131507603 has 2 divisors, whose sum is σ = 131507604. Its totient is φ = 131507602.

The previous prime is 131507567. The next prime is 131507609. The reversal of 131507603 is 306705131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131507603 - 2⁸ = 131507347 is a prime.

It is not a weakly prime, because it can be changed into another prime (131507609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65753801 + 65753802.

It is an arithmetic number, because the mean of its divisors is an integer number (65753802).

Almost surely, 2^131507603 is an apocalyptic number.

131507603 is a deficient number, since it is larger than the sum of its proper divisors (1).

131507603 is an equidigital number, since it uses as much as digits as its factorization.

131507603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 131507603 is about 11467.6764429417. The cubic root of 131507603 is about 508.5304395406.

The spelling of 131507603 in words is "one hundred thirty-one million, five hundred seven thousand, six hundred three".