231188981707 has 2 divisors, whose sum is σ = 231188981708. Its totient is φ = 231188981706.

The previous prime is 231188981687. The next prime is 231188981713. The reversal of 231188981707 is 707189881132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231188981707 is a prime.

It is not a weakly prime, because it can be changed into another prime (231188982707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115594490853 + 115594490854.

It is an arithmetic number, because the mean of its divisors is an integer number (115594490854).

Almost surely, 2^231188981707 is an apocalyptic number.

231188981707 is a deficient number, since it is larger than the sum of its proper divisors (1).

231188981707 is an equidigital number, since it uses as much as digits as its factorization.

231188981707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 55.

The spelling of 231188981707 in words is "two hundred thirty-one billion, one hundred eighty-eight million, nine hundred eighty-one thousand, seven hundred seven".