312311442 has 32 divisors (see below), whose sum is σ = 630739008. Its totient is φ = 103090176.

The previous prime is 312311431. The next prime is 312311443. The reversal of 312311442 is 244113213.

It is not an unprimeable number, because it can be changed into a prime (312311443) 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, 327238 + ... + 328190.

It is an arithmetic number, because the mean of its divisors is an integer number (19710594).

Almost surely, 2^312311442 is an apocalyptic number.

312311442 is an abundant number, since it is smaller than the sum of its proper divisors (318427566).

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

312311442 is a wasteful number, since it uses less digits than its factorization.

312311442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its digits is 576, while the sum is 21.

The square root of 312311442 is about 17672.3354993051. The cubic root of 312311442 is about 678.4678899796.

Adding to 312311442 its reverse (244113213), we get a palindrome (556424655).

The spelling of 312311442 in words is "three hundred twelve million, three hundred eleven thousand, four hundred forty-two".