312404120311243 has 8 divisors (see below), whose sum is σ = 314689198669328. Its totient is φ = 310123535717664.

The previous prime is 312404120311187. The next prime is 312404120311271. The reversal of 312404120311243 is 342113021404213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 312404120311243 - 2¹⁷ = 312404120180171 is a prime.

It is a super-2 number, since 2×312404120311243² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312404120371243) 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, 1123301580 + ... + 1123579657.

It is an arithmetic number, because the mean of its divisors is an integer number (39336149833666).

Almost surely, 2^{312404120311243} is an apocalyptic number.

312404120311243 is a deficient number, since it is larger than the sum of its proper divisors (2285078358085).

312404120311243 is a wasteful number, since it uses less digits than its factorization.

312404120311243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246882253.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 312404120311243 its reverse (342113021404213), we get a palindrome (654517141715456).

The spelling of 312404120311243 in words is "three hundred twelve trillion, four hundred four billion, one hundred twenty million, three hundred eleven thousand, two hundred forty-three".