100210381 has 2 divisors, whose sum is σ = 100210382. Its totient is φ = 100210380.

The previous prime is 100210367. The next prime is 100210403. The reversal of 100210381 is 183012001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95942025 + 4268356 = 9795^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 100210381 - 2¹¹ = 100208333 is a prime.

It is a super-2 number, since 2×100210381² = 20084240920330322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100210681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50105190 + 50105191.

It is an arithmetic number, because the mean of its divisors is an integer number (50105191).

Almost surely, 2^100210381 is an apocalyptic number.

It is an amenable number.

100210381 is a deficient number, since it is larger than the sum of its proper divisors (1).

100210381 is an equidigital number, since it uses as much as digits as its factorization.

100210381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 100210381 is about 10010.5135232914. The cubic root of 100210381 is about 464.4841560640.

Adding to 100210381 its reverse (183012001), we get a palindrome (283222382).

The spelling of 100210381 in words is "one hundred million, two hundred ten thousand, three hundred eighty-one".