312621191418 has 8 divisors (see below), whose sum is σ = 625242382848. Its totient is φ = 104207063804.

The previous prime is 312621191413. The next prime is 312621191429. The reversal of 312621191418 is 814191126213.

It is a happy number.

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

312621191418 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (312621191413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26051765946 + ... + 26051765957.

It is an arithmetic number, because the mean of its divisors is an integer number (78155297856).

Almost surely, 2^312621191418 is an apocalyptic number.

312621191418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

312621191418 is a wasteful number, since it uses less digits than its factorization.

312621191418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52103531908.

The product of its digits is 20736, while the sum is 39.

The spelling of 312621191418 in words is "three hundred twelve billion, six hundred twenty-one million, one hundred ninety-one thousand, four hundred eighteen".