231109878007 has 2 divisors, whose sum is σ = 231109878008. Its totient is φ = 231109878006.

The previous prime is 231109877993. The next prime is 231109878017. The reversal of 231109878007 is 700878901132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231109878007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231109878017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115554939003 + 115554939004.

It is an arithmetic number, because the mean of its divisors is an integer number (115554939004).

Almost surely, 2^231109878007 is an apocalyptic number.

231109878007 is a deficient number, since it is larger than the sum of its proper divisors (1).

231109878007 is an equidigital number, since it uses as much as digits as its factorization.

231109878007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 46.

The spelling of 231109878007 in words is "two hundred thirty-one billion, one hundred nine million, eight hundred seventy-eight thousand, seven".