103172818 has 16 divisors (see below), whose sum is σ = 179000640. Its totient is φ = 43683696.

The previous prime is 103172801. The next prime is 103172819. The reversal of 103172818 is 818271301.

It is a happy number.

It is a super-2 number, since 2×103172818² = 21289260748122248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103172818.

It is not an unprimeable number, because it can be changed into a prime (103172819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43233 + ... + 45556.

It is an arithmetic number, because the mean of its divisors is an integer number (11187540).

Almost surely, 2^103172818 is an apocalyptic number.

103172818 is a deficient number, since it is larger than the sum of its proper divisors (75827822).

103172818 is an equidigital number, since it uses as much as digits as its factorization.

103172818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88881.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 103172818 is about 10157.4021284972. The cubic root of 103172818 is about 469.0168341983.

The spelling of 103172818 in words is "one hundred three million, one hundred seventy-two thousand, eight hundred eighteen".