231101223139 has 2 divisors, whose sum is σ = 231101223140. Its totient is φ = 231101223138.

The previous prime is 231101223127. The next prime is 231101223151. The reversal of 231101223139 is 931322101132.

It is a balanced prime because it is at equal distance from previous prime (231101223127) and next prime (231101223151).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231101223139 is a prime.

It is not a weakly prime, because it can be changed into another prime (231101223539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115550611569 + 115550611570.

It is an arithmetic number, because the mean of its divisors is an integer number (115550611570).

Almost surely, 2^231101223139 is an apocalyptic number.

231101223139 is a deficient number, since it is larger than the sum of its proper divisors (1).

231101223139 is an equidigital number, since it uses as much as digits as its factorization.

231101223139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 231101223139 in words is "two hundred thirty-one billion, one hundred one million, two hundred twenty-three thousand, one hundred thirty-nine".