2023131281 has 2 divisors, whose sum is σ = 2023131282. Its totient is φ = 2023131280.

The previous prime is 2023131247. The next prime is 2023131287. The reversal of 2023131281 is 1821313202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1598400400 + 424730881 = 39980^2 + 20609^2 .

It is a cyclic number.

It is not a de Polignac number, because 2023131281 - 2²² = 2018936977 is a prime.

It is a super-2 number, since 2×2023131281² = 8186120360321401922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2023131287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011565640 + 1011565641.

It is an arithmetic number, because the mean of its divisors is an integer number (1011565641).

Almost surely, 2^2023131281 is an apocalyptic number.

It is an amenable number.

2023131281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023131281 is an equidigital number, since it uses as much as digits as its factorization.

2023131281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2023131281 is about 44979.2316630687. The cubic root of 2023131281 is about 1264.7597081431.

Adding to 2023131281 its reverse (1821313202), we get a palindrome (3844444483).

The spelling of 2023131281 in words is "two billion, twenty-three million, one hundred thirty-one thousand, two hundred eighty-one".