312012422 has 4 divisors (see below), whose sum is σ = 468018636. Its totient is φ = 156006210.

The previous prime is 312012413. The next prime is 312012469. The reversal of 312012422 is 224210213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224210213 = 43 ⋅5214191.

It is a self number, because there is not a number n which added to its sum of digits gives 312012422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78003104 + ... + 78003107.

It is an arithmetic number, because the mean of its divisors is an integer number (117004659).

Almost surely, 2^312012422 is an apocalyptic number.

312012422 is a deficient number, since it is larger than the sum of its proper divisors (156006214).

312012422 is a wasteful number, since it uses less digits than its factorization.

312012422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156006213.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 312012422 is about 17663.8733577888. The cubic root of 312012422 is about 678.2512896861.

Adding to 312012422 its reverse (224210213), we get a palindrome (536222635).

The spelling of 312012422 in words is "three hundred twelve million, twelve thousand, four hundred twenty-two".