312006642 has 8 divisors (see below), whose sum is σ = 624013296. Its totient is φ = 104002212.

The previous prime is 312006641. The next prime is 312006649. The reversal of 312006642 is 246600213.

It is a sphenic number, since it is the product of 3 distinct primes.

312006642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (312006641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26000548 + ... + 26000559.

It is an arithmetic number, because the mean of its divisors is an integer number (78001662).

Almost surely, 2^312006642 is an apocalyptic number.

312006642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

312006642 is a wasteful number, since it uses less digits than its factorization.

312006642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52001112.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 312006642 is about 17663.7097462566. The cubic root of 312006642 is about 678.2471014803.

Adding to 312006642 its reverse (246600213), we get a palindrome (558606855).

The spelling of 312006642 in words is "three hundred twelve million, six thousand, six hundred forty-two".