103128979 has 16 divisors (see below), whose sum is σ = 111555360. Its totient is φ = 95040000.

The previous prime is 103128973. The next prime is 103128997. The reversal of 103128979 is 979821301.

It is a cyclic number.

It is not a de Polignac number, because 103128979 - 2⁵ = 103128947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103128973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116619 + ... + 117499.

It is an arithmetic number, because the mean of its divisors is an integer number (6972210).

Almost surely, 2^103128979 is an apocalyptic number.

103128979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

103128979 is a deficient number, since it is larger than the sum of its proper divisors (8426381).

103128979 is a wasteful number, since it uses less digits than its factorization.

103128979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 103128979 is about 10155.2439163222. The cubic root of 103128979 is about 468.9503950518.

It can be divided in two parts, 10312 and 8979, that added together give a palindrome (19291).

The spelling of 103128979 in words is "one hundred three million, one hundred twenty-eight thousand, nine hundred seventy-nine".