231001213099 has 16 divisors (see below), whose sum is σ = 234626938560. Its totient is φ = 227405445120.

The previous prime is 231001213043. The next prime is 231001213103. The reversal of 231001213099 is 990312100132.

231001213099 = 26132² + 26133² + ... + 26465².

It is a cyclic number.

It is not a de Polignac number, because 231001213099 - 2⁹ = 231001212587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231001213099.

It is not an unprimeable number, because it can be changed into a prime (231001214099) 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, 28094809 + ... + 28103029.

It is an arithmetic number, because the mean of its divisors is an integer number (14664183660).

Almost surely, 2^231001213099 is an apocalyptic number.

231001213099 is a deficient number, since it is larger than the sum of its proper divisors (3625725461).

231001213099 is a wasteful number, since it uses less digits than its factorization.

231001213099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 231001213099 in words is "two hundred thirty-one billion, one million, two hundred thirteen thousand, ninety-nine".