312042402 has 32 divisors (see below), whose sum is σ = 792489600. Its totient is φ = 89154864.

The previous prime is 312042343. The next prime is 312042457. The reversal of 312042402 is 204240213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412377 + ... + 413132.

It is an arithmetic number, because the mean of its divisors is an integer number (24765300).

Almost surely, 2^312042402 is an apocalyptic number.

312042402 is an abundant number, since it is smaller than the sum of its proper divisors (480447198).

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

312042402 is a wasteful number, since it uses less digits than its factorization.

312042402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825527 (or 825521 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 312042402 is about 17664.7219621482. The cubic root of 312042402 is about 678.2730124563.

Adding to 312042402 its reverse (204240213), we get a palindrome (516282615).

The spelling of 312042402 in words is "three hundred twelve million, forty-two thousand, four hundred two".