100378631 has 2 divisors, whose sum is σ = 100378632. Its totient is φ = 100378630.

The previous prime is 100378627. The next prime is 100378637. The reversal of 100378631 is 136873001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100378631 - 2² = 100378627 is a prime.

It is a super-2 number, since 2×100378631² = 20151739122868322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100378594 and 100378603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100378637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50189315 + 50189316.

It is an arithmetic number, because the mean of its divisors is an integer number (50189316).

Almost surely, 2^100378631 is an apocalyptic number.

100378631 is a deficient number, since it is larger than the sum of its proper divisors (1).

100378631 is an equidigital number, since it uses as much as digits as its factorization.

100378631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 100378631 is about 10018.9136636663. The cubic root of 100378631 is about 464.7439620256.

The spelling of 100378631 in words is "one hundred million, three hundred seventy-eight thousand, six hundred thirty-one".