2134431281 has 2 divisors, whose sum is σ = 2134431282. Its totient is φ = 2134431280.

The previous prime is 2134431227. The next prime is 2134431293. The reversal of 2134431281 is 1821344312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251390625 + 883040656 = 35375^2 + 29716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2134431281 is a prime.

It is a super-2 number, since 2×2134431281² = 9111593786622601922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2134431781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067215640 + 1067215641.

It is an arithmetic number, because the mean of its divisors is an integer number (1067215641).

Almost surely, 2^2134431281 is an apocalyptic number.

It is an amenable number.

2134431281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134431281 is an equidigital number, since it uses as much as digits as its factorization.

2134431281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 2134431281 is about 46199.9056384318. The cubic root of 2134431281 is about 1287.5399867683.

Adding to 2134431281 its reverse (1821344312), we get a palindrome (3955775593).

It can be divided in two parts, 21344 and 31281, that added together give a palindrome (52625).

The spelling of 2134431281 in words is "two billion, one hundred thirty-four million, four hundred thirty-one thousand, two hundred eighty-one".