131355009 has 6 divisors (see below), whose sum is σ = 189735026. Its totient is φ = 87570000.

The previous prime is 131354987. The next prime is 131355023. The reversal of 131355009 is 900553131.

It can be written as a sum of positive squares in only one way, i.e., 131331600 + 23409 = 11460^2 + 153^2 .

It is not a de Polignac number, because 131355009 - 2⁸ = 131354753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131355079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7297492 + ... + 7297509.

Almost surely, 2^131355009 is an apocalyptic number.

It is an amenable number.

131355009 is a deficient number, since it is larger than the sum of its proper divisors (58380017).

131355009 is a wasteful number, since it uses less digits than its factorization.

131355009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14595007 (or 14595004 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 131355009 is about 11461.0212895710. The cubic root of 131355009 is about 508.3336734090. Note that the first 3 decimals are identical.

The spelling of 131355009 in words is "one hundred thirty-one million, three hundred fifty-five thousand, nine".