131321099 has 16 divisors (see below), whose sum is σ = 168655872. Its totient is φ = 99383328.

The previous prime is 131321083. The next prime is 131321101. The reversal of 131321099 is 990123131.

It is a cyclic number.

It is not a de Polignac number, because 131321099 - 2⁴ = 131321083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131321899) 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, 29279 + ... + 33464.

It is an arithmetic number, because the mean of its divisors is an integer number (10540992).

Almost surely, 2^131321099 is an apocalyptic number.

131321099 is a deficient number, since it is larger than the sum of its proper divisors (37334773).

131321099 is a wasteful number, since it uses less digits than its factorization.

131321099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62786.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 131321099 is about 11459.5418320280. The cubic root of 131321099 is about 508.2899266230.

The spelling of 131321099 in words is "one hundred thirty-one million, three hundred twenty-one thousand, ninety-nine".