312438742 has 32 divisors (see below), whose sum is σ = 585527040. Its totient is φ = 121474080.

The previous prime is 312438719. The next prime is 312438743. The reversal of 312438742 is 247834213.

It is a junction number, because it is equal to n+sod(n) for n = 312438698 and 312438707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312438743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82384 + ... + 86092.

It is an arithmetic number, because the mean of its divisors is an integer number (18297720).

Almost surely, 2^312438742 is an apocalyptic number.

312438742 is a deficient number, since it is larger than the sum of its proper divisors (273088298).

312438742 is a wasteful number, since it uses less digits than its factorization.

312438742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276.

The product of its digits is 32256, while the sum is 34.

The square root of 312438742 is about 17675.9368068569. The cubic root of 312438742 is about 678.5600599726.

The spelling of 312438742 in words is "three hundred twelve million, four hundred thirty-eight thousand, seven hundred forty-two".