131326601 has 16 divisors (see below), whose sum is σ = 156862464. Its totient is φ = 107596944.

The previous prime is 131326589. The next prime is 131326603. The reversal of 131326601 is 106623131.

It is a happy number.

It is not a de Polignac number, because 131326601 - 2¹⁰ = 131325577 is a prime.

It is a super-2 number, since 2×131326601² = 34493352260426402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131326603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9506 + ... + 18788.

It is an arithmetic number, because the mean of its divisors is an integer number (9803904).

Almost surely, 2^131326601 is an apocalyptic number.

It is an amenable number.

131326601 is a deficient number, since it is larger than the sum of its proper divisors (25535863).

131326601 is an equidigital number, since it uses as much as digits as its factorization.

131326601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9380.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 131326601 is about 11459.7818914672. The cubic root of 131326601 is about 508.2970251830.

Adding to 131326601 its reverse (106623131), we get a palindrome (237949732).

The spelling of 131326601 in words is "one hundred thirty-one million, three hundred twenty-six thousand, six hundred one".