1992313231 has 2 divisors, whose sum is σ = 1992313232. Its totient is φ = 1992313230.

The previous prime is 1992313217. The next prime is 1992313243. The reversal of 1992313231 is 1323132991.

It is a strong prime.

It is an emirp because it is prime and its reverse (1323132991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1992313231 - 2⁹ = 1992312719 is a prime.

It is a super-2 number, since 2×1992313231² = 7938624020835318722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992313031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996156615 + 996156616.

It is an arithmetic number, because the mean of its divisors is an integer number (996156616).

Almost surely, 2^1992313231 is an apocalyptic number.

1992313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992313231 is an equidigital number, since it uses as much as digits as its factorization.

1992313231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 34.

The square root of 1992313231 is about 44635.3361250926. The cubic root of 1992313231 is about 1258.3048572283.

The spelling of 1992313231 in words is "one billion, nine hundred ninety-two million, three hundred thirteen thousand, two hundred thirty-one".