312122210387 has 8 divisors (see below), whose sum is σ = 336890379504. Its totient is φ = 287462436768.

The previous prime is 312122210381. The next prime is 312122210423. The reversal of 312122210387 is 783012221213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312122210387 - 2²⁸ = 311853774931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312122210381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27092888 + ... + 27104405.

It is an arithmetic number, because the mean of its divisors is an integer number (42111297438).

Almost surely, 2^312122210387 is an apocalyptic number.

312122210387 is a deficient number, since it is larger than the sum of its proper divisors (24768169117).

312122210387 is a wasteful number, since it uses less digits than its factorization.

312122210387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54197749.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 312122210387 in words is "three hundred twelve billion, one hundred twenty-two million, two hundred ten thousand, three hundred eighty-seven".