102631618 has 16 divisors (see below), whose sum is σ = 164532384. Its totient is φ = 47844160.

The previous prime is 102631577. The next prime is 102631631. The reversal of 102631618 is 816136201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10468 + ... + 17743.

It is an arithmetic number, because the mean of its divisors is an integer number (10283274).

Almost surely, 2^102631618 is an apocalyptic number.

102631618 is a deficient number, since it is larger than the sum of its proper divisors (61900766).

102631618 is a wasteful number, since it uses less digits than its factorization.

102631618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28337.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 102631618 is about 10130.7264300247. The cubic root of 102631618 is about 468.1953095488.

Adding to 102631618 its reverse (816136201), we get a palindrome (918767819).

It can be divided in two parts, 10263 and 1618, that added together give a square (11881 = 109²).

The spelling of 102631618 in words is "one hundred two million, six hundred thirty-one thousand, six hundred eighteen".