102999312 has 60 divisors (see below), whose sum is σ = 310434124. Its totient is φ = 31691520.

The previous prime is 102999289. The next prime is 102999341. The reversal of 102999312 is 213999201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21566736 + 81432576 = 4644^2 + 9024^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25639 + ... + 29382.

Almost surely, 2^102999312 is an apocalyptic number.

102999312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102999312 is an abundant number, since it is smaller than the sum of its proper divisors (207434812).

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

102999312 is a wasteful number, since it uses less digits than its factorization.

102999312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55048 (or 55039 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 102999312 is about 10148.8576697084. The cubic root of 102999312 is about 468.7537710630.

The spelling of 102999312 in words is "one hundred two million, nine hundred ninety-nine thousand, three hundred twelve".