100370381 has 4 divisors (see below), whose sum is σ = 103083132. Its totient is φ = 97657632.

The previous prime is 100370377. The next prime is 100370383. The reversal of 100370381 is 183073001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82646281 + 17724100 = 9091^2 + 4210^2 .

It is a cyclic number.

It is not a de Polignac number, because 100370381 - 2² = 100370377 is a prime.

It is a super-2 number, since 2×100370381² = 20148426764170322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100370383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1356320 + ... + 1356393.

It is an arithmetic number, because the mean of its divisors is an integer number (25770783).

Almost surely, 2^100370381 is an apocalyptic number.

It is an amenable number.

100370381 is a deficient number, since it is larger than the sum of its proper divisors (2712751).

100370381 is an equidigital number, since it uses as much as digits as its factorization.

100370381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712750.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 100370381 is about 10018.5019339221. The cubic root of 100370381 is about 464.7312294260.

The spelling of 100370381 in words is "one hundred million, three hundred seventy thousand, three hundred eighty-one".