2031312443 has 2 divisors, whose sum is σ = 2031312444. Its totient is φ = 2031312442.

The previous prime is 2031312431. The next prime is 2031312457. The reversal of 2031312443 is 3442131302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2031312443 - 2⁴ = 2031312427 is a prime.

It is not a weakly prime, because it can be changed into another prime (2031312043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015656221 + 1015656222.

It is an arithmetic number, because the mean of its divisors is an integer number (1015656222).

Almost surely, 2^2031312443 is an apocalyptic number.

2031312443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031312443 is an equidigital number, since it uses as much as digits as its factorization.

2031312443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2031312443 is about 45070.0836808631. The cubic root of 2031312443 is about 1266.4622320192.

Adding to 2031312443 its reverse (3442131302), we get a palindrome (5473443745).

The spelling of 2031312443 in words is "two billion, thirty-one million, three hundred twelve thousand, four hundred forty-three".