102031879 has 2 divisors, whose sum is σ = 102031880. Its totient is φ = 102031878.

The previous prime is 102031871. The next prime is 102031907. The reversal of 102031879 is 978130201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102031879 - 2³ = 102031871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102031879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102031871) 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, 51015939 + 51015940.

It is an arithmetic number, because the mean of its divisors is an integer number (51015940).

Almost surely, 2^102031879 is an apocalyptic number.

102031879 is a deficient number, since it is larger than the sum of its proper divisors (1).

102031879 is an equidigital number, since it uses as much as digits as its factorization.

102031879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 102031879 is about 10101.0830607416. The cubic root of 102031879 is about 467.2815439639.

The spelling of 102031879 in words is "one hundred two million, thirty-one thousand, eight hundred seventy-nine".