103213818 has 32 divisors (see below), whose sum is σ = 236766720. Its totient is φ = 33294240.

The previous prime is 103213763. The next prime is 103213867. The reversal of 103213818 is 818312301.

It is a super-2 number, since 2×103213818² = 21306184452274248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 103213791 and 103213800.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29155 + ... + 32502.

It is an arithmetic number, because the mean of its divisors is an integer number (7398960).

Almost surely, 2^103213818 is an apocalyptic number.

103213818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

103213818 is an abundant number, since it is smaller than the sum of its proper divisors (133552902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103213818 is a wasteful number, since it uses less digits than its factorization.

103213818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61699 (or 61693 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 103213818 is about 10159.4201606194. The cubic root of 103213818 is about 469.0789537368.

The spelling of 103213818 in words is "one hundred three million, two hundred thirteen thousand, eight hundred eighteen".