18106312 has 32 divisors (see below), whose sum is σ = 38949120. Its totient is φ = 7729920.

The previous prime is 18106303. The next prime is 18106321. The reversal of 18106312 is 21360181.

It is an interprime number because it is at equal distance from previous prime (18106303) and next prime (18106321).

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, 20112 + ... + 20992.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^18106312 is an apocalyptic number.

It is an amenable number.

18106312 is an abundant number, since it is smaller than the sum of its proper divisors (20842808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18106312 is a wasteful number, since it uses less digits than its factorization.

18106312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 18106312 is about 4255.1512311550. The cubic root of 18106312 is about 262.5890829926.

Adding to 18106312 its reverse (21360181), we get a palindrome (39466493).

The spelling of 18106312 in words is "eighteen million, one hundred six thousand, three hundred twelve".