102104631 has 10 divisors (see below), whose sum is σ = 152526792. Its totient is φ = 68069700.

The previous prime is 102104617. The next prime is 102104641. The reversal of 102104631 is 136401201.

It is a happy number.

102104631 is a `hidden beast` number, since 10 + 21 + 0 + 4 + 631 = 666.

It is not a de Polignac number, because 102104631 - 2²⁵ = 68550199 is a prime.

It is a super-2 number, since 2×102104631² = 20850711343292322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102104641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 630195 + ... + 630356.

Almost surely, 2^102104631 is an apocalyptic number.

102104631 is a deficient number, since it is larger than the sum of its proper divisors (50422161).

102104631 is an equidigital number, since it uses as much as digits as its factorization.

102104631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260563 (or 1260554 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 102104631 is about 10104.6836170164. The cubic root of 102104631 is about 467.3925798166.

Adding to 102104631 its reverse (136401201), we get a palindrome (238505832).

It can be divided in two parts, 10210 and 4631, that added together give a palindrome (14841).

The spelling of 102104631 in words is "one hundred two million, one hundred four thousand, six hundred thirty-one".