2031312400243 has 12 divisors (see below), whose sum is σ = 2373096693240. Its totient is φ = 1733652265632.

The previous prime is 2031312400241. The next prime is 2031312400267. The reversal of 2031312400243 is 3420042131302.

It is not a de Polignac number, because 2031312400243 - 2¹ = 2031312400241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2031312400241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88948573 + ... + 88971406.

It is an arithmetic number, because the mean of its divisors is an integer number (197758057770).

Almost surely, 2^{2031312400243} is an apocalyptic number.

2031312400243 is a deficient number, since it is larger than the sum of its proper divisors (341784292997).

2031312400243 is a wasteful number, since it uses less digits than its factorization.

2031312400243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177920226 (or 177920219 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 2031312400243 its reverse (3420042131302), we get a palindrome (5451354531545).

The spelling of 2031312400243 in words is "two trillion, thirty-one billion, three hundred twelve million, four hundred thousand, two hundred forty-three".