312130002 has 32 divisors (see below), whose sum is σ = 647064000. Its totient is φ = 100294848.

The previous prime is 312129953. The next prime is 312130003. The reversal of 312130002 is 200031213.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 312130002.

It is not an unprimeable number, because it can be changed into a prime (312130003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17749 + ... + 30647.

It is an arithmetic number, because the mean of its divisors is an integer number (20220750).

Almost surely, 2^312130002 is an apocalyptic number.

312130002 is an abundant number, since it is smaller than the sum of its proper divisors (334933998).

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

312130002 is a wasteful number, since it uses less digits than its factorization.

312130002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13050.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 312130002 is about 17667.2013063756. The cubic root of 312130002 is about 678.3364772892.

Adding to 312130002 its reverse (200031213), we get a palindrome (512161215).

The spelling of 312130002 in words is "three hundred twelve million, one hundred thirty thousand, two".