2123319943 has 2 divisors, whose sum is σ = 2123319944. Its totient is φ = 2123319942.

The previous prime is 2123319929. The next prime is 2123320021. The reversal of 2123319943 is 3499133212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123319943 - 2²¹ = 2121222791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123319643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061659971 + 1061659972.

It is an arithmetic number, because the mean of its divisors is an integer number (1061659972).

Almost surely, 2^2123319943 is an apocalyptic number.

2123319943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123319943 is an equidigital number, since it uses as much as digits as its factorization.

2123319943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The square root of 2123319943 is about 46079.4959065309. The cubic root of 2123319943 is about 1285.3018903413.

The spelling of 2123319943 in words is "two billion, one hundred twenty-three million, three hundred nineteen thousand, nine hundred forty-three".