312000022 has 4 divisors (see below), whose sum is σ = 468000036. Its totient is φ = 156000010.

The previous prime is 312000019. The next prime is 312000023. The reversal of 312000022 is 220000213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220000213 = 17 ⋅12941189.

It is a junction number, because it is equal to n+sod(n) for n = 311999972 and 312000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312000023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78000004 + ... + 78000007.

It is an arithmetic number, because the mean of its divisors is an integer number (117000009).

Almost surely, 2^312000022 is an apocalyptic number.

312000022 is a deficient number, since it is larger than the sum of its proper divisors (156000014).

312000022 is a wasteful number, since it uses less digits than its factorization.

312000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156000013.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 312000022 is about 17663.5223554081. The cubic root of 312000022 is about 678.2423045444.

Adding to 312000022 its reverse (220000213), we get a palindrome (532000235).

The spelling of 312000022 in words is "three hundred twelve million, twenty-two", and thus it is an aban number.