100131223279 has 2 divisors, whose sum is σ = 100131223280. Its totient is φ = 100131223278.

The previous prime is 100131223261. The next prime is 100131223321. The reversal of 100131223279 is 972322131001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100131223279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100131223279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100131223259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50065611639 + 50065611640.

It is an arithmetic number, because the mean of its divisors is an integer number (50065611640).

Almost surely, 2^100131223279 is an apocalyptic number.

100131223279 is a deficient number, since it is larger than the sum of its proper divisors (1).

100131223279 is an equidigital number, since it uses as much as digits as its factorization.

100131223279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 100131223279 in words is "one hundred billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred seventy-nine".