312569442 has 48 divisors (see below), whose sum is σ = 706436640. Its totient is φ = 103578912.

The previous prime is 312569441. The next prime is 312569449. The reversal of 312569442 is 244965213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 312569397 and 312569406.

It is not an unprimeable number, because it can be changed into a prime (312569441) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 85198 + ... + 88790.

It is an arithmetic number, because the mean of its divisors is an integer number (14717430).

Almost surely, 2^312569442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312569442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353218320).

312569442 is an abundant number, since it is smaller than the sum of its proper divisors (393867198).

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

312569442 is a wasteful number, since it uses less digits than its factorization.

312569442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 3777 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 312569442 is about 17679.6335369260. The cubic root of 312569442 is about 678.6546656495.

The spelling of 312569442 in words is "three hundred twelve million, five hundred sixty-nine thousand, four hundred forty-two".