312542340 has 48 divisors (see below), whose sum is σ = 954676800. Its totient is φ = 75767680.

The previous prime is 312542333. The next prime is 312542353. The reversal of 312542340 is 43245213.

It is a self number, because there is not a number n which added to its sum of digits gives 312542340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236115 + ... + 237434.

It is an arithmetic number, because the mean of its divisors is an integer number (19889100).

Almost surely, 2^312542340 is an apocalyptic number.

312542340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312542340 is an abundant number, since it is smaller than the sum of its proper divisors (642134460).

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

312542340 is a wasteful number, since it uses less digits than its factorization.

312542340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473572 (or 473570 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 312542340 is about 17678.8670451474. The cubic root of 312542340 is about 678.6350503492.

Adding to 312542340 its reverse (43245213), we get a palindrome (355787553).

The spelling of 312542340 in words is "three hundred twelve million, five hundred forty-two thousand, three hundred forty".