2042243431 has 2 divisors, whose sum is σ = 2042243432. Its totient is φ = 2042243430.

The previous prime is 2042243429. The next prime is 2042243491. The reversal of 2042243431 is 1343422402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2042243431 - 2¹ = 2042243429 is a prime.

It is a super-2 number, since 2×2042243431² = 8341516462925303522, which contains 22 as substring.

Together with 2042243429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2042243396 and 2042243405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042243491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021121715 + 1021121716.

It is an arithmetic number, because the mean of its divisors is an integer number (1021121716).

Almost surely, 2^2042243431 is an apocalyptic number.

2042243431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042243431 is an equidigital number, since it uses as much as digits as its factorization.

2042243431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2042243431 is about 45191.1875369524. The cubic root of 2042243431 is about 1268.7298833925.

Adding to 2042243431 its reverse (1343422402), we get a palindrome (3385665833).

The spelling of 2042243431 in words is "two billion, forty-two million, two hundred forty-three thousand, four hundred thirty-one".