312440101243 has 8 divisors (see below), whose sum is σ = 312926205312. Its totient is φ = 311954366016.

The previous prime is 312440101241. The next prime is 312440101277. The reversal of 312440101243 is 342101044213.

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 312440101243 - 2¹ = 312440101241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312440101241) 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, 1628121 + ... + 1809877.

It is an arithmetic number, because the mean of its divisors is an integer number (39115775664).

Almost surely, 2^312440101243 is an apocalyptic number.

312440101243 is a deficient number, since it is larger than the sum of its proper divisors (486104069).

312440101243 is a wasteful number, since it uses less digits than its factorization.

312440101243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184421.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 312440101243 its reverse (342101044213), we get a palindrome (654541145456).

The spelling of 312440101243 in words is "three hundred twelve billion, four hundred forty million, one hundred one thousand, two hundred forty-three".