312543022 has 16 divisors (see below), whose sum is σ = 512317872. Its totient is φ = 141819520.

The previous prime is 312542987. The next prime is 312543047. The reversal of 312543022 is 220345213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 312542984 and 312543002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068 + ... + 25024.

It is an arithmetic number, because the mean of its divisors is an integer number (32019867).

Almost surely, 2^312543022 is an apocalyptic number.

312543022 is a deficient number, since it is larger than the sum of its proper divisors (199774850).

312543022 is a wasteful number, since it uses less digits than its factorization.

312543022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24563.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 312543022 is about 17678.8863337033. The cubic root of 312543022 is about 678.6355439663.

Adding to 312543022 its reverse (220345213), we get a palindrome (532888235).

The spelling of 312543022 in words is "three hundred twelve million, five hundred forty-three thousand, twenty-two".