2131284433 has 2 divisors, whose sum is σ = 2131284434. Its totient is φ = 2131284432.

The previous prime is 2131284431. The next prime is 2131284469. The reversal of 2131284433 is 3344821312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101708864 + 1029575569 = 33192^2 + 32087^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131284433 - 2¹ = 2131284431 is a prime.

Together with 2131284431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2131284395 and 2131284404.

It is not a weakly prime, because it can be changed into another prime (2131284431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065642216 + 1065642217.

It is an arithmetic number, because the mean of its divisors is an integer number (1065642217).

Almost surely, 2^2131284433 is an apocalyptic number.

It is an amenable number.

2131284433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131284433 is an equidigital number, since it uses as much as digits as its factorization.

2131284433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 2131284433 is about 46165.8362103407. The cubic root of 2131284433 is about 1286.9069242326.

The spelling of 2131284433 in words is "two billion, one hundred thirty-one million, two hundred eighty-four thousand, four hundred thirty-three".