231001231099 has 2 divisors, whose sum is σ = 231001231100. Its totient is φ = 231001231098.

The previous prime is 231001231073. The next prime is 231001231103. The reversal of 231001231099 is 990132100132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231001231099 - 2⁵ = 231001231067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231001231099.

It is not a weakly prime, because it can be changed into another prime (231001234099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115500615549 + 115500615550.

It is an arithmetic number, because the mean of its divisors is an integer number (115500615550).

Almost surely, 2^231001231099 is an apocalyptic number.

231001231099 is a deficient number, since it is larger than the sum of its proper divisors (1).

231001231099 is an equidigital number, since it uses as much as digits as its factorization.

231001231099 is an evil number, because the sum of its binary digits is even.

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

The spelling of 231001231099 in words is "two hundred thirty-one billion, one million, two hundred thirty-one thousand, ninety-nine".