100381700 has 18 divisors (see below), whose sum is σ = 217828506. Its totient is φ = 40152640.

The previous prime is 100381691. The next prime is 100381709. The reversal of 100381700 is 7183001.

It is an interprime number because it is at equal distance from previous prime (100381691) and next prime (100381709).

It can be written as a sum of positive squares in 3 ways, for example, as 8375236 + 92006464 = 2894^2 + 9592^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (100381709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501809 + ... + 502008.

Almost surely, 2^100381700 is an apocalyptic number.

100381700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100381700 is an abundant number, since it is smaller than the sum of its proper divisors (117446806).

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

100381700 is a wasteful number, since it uses less digits than its factorization.

100381700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003831 (or 1003824 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 100381700 is about 10019.0668228134. The cubic root of 100381700 is about 464.7486983746.

The spelling of 100381700 in words is "one hundred million, three hundred eighty-one thousand, seven hundred".