101131279 has 2 divisors, whose sum is σ = 101131280. Its totient is φ = 101131278.

The previous prime is 101131273. The next prime is 101131301. The reversal of 101131279 is 972131101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101131279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101131273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50565639 + 50565640.

It is an arithmetic number, because the mean of its divisors is an integer number (50565640).

Almost surely, 2^101131279 is an apocalyptic number.

101131279 is a deficient number, since it is larger than the sum of its proper divisors (1).

101131279 is an equidigital number, since it uses as much as digits as its factorization.

101131279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 101131279 is about 10056.4048745066. The cubic root of 101131279 is about 465.9026348922.

The spelling of 101131279 in words is "one hundred one million, one hundred thirty-one thousand, two hundred seventy-nine".