131213201099 has 16 divisors (see below), whose sum is σ = 136732147200. Its totient is φ = 125812520736.

The previous prime is 131213201071. The next prime is 131213201137. The reversal of 131213201099 is 990102312131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131213201099 - 2²⁸ = 130944765643 is a prime.

It is a super-2 number, since 2×131213201099² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131213201039) 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, 1788137 + ... + 1860069.

It is an arithmetic number, because the mean of its divisors is an integer number (8545759200).

Almost surely, 2^131213201099 is an apocalyptic number.

131213201099 is a deficient number, since it is larger than the sum of its proper divisors (5518946101).

131213201099 is an equidigital number, since it uses as much as digits as its factorization.

131213201099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72754.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 131213201099 in words is "one hundred thirty-one billion, two hundred thirteen million, two hundred one thousand, ninety-nine".