2131243337 has 2 divisors, whose sum is σ = 2131243338. Its totient is φ = 2131243336.

The previous prime is 2131243333. The next prime is 2131243343. The reversal of 2131243337 is 7333421312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2074255936 + 56987401 = 45544^2 + 7549^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131243337 - 2² = 2131243333 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131243333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065621668 + 1065621669.

It is an arithmetic number, because the mean of its divisors is an integer number (1065621669).

Almost surely, 2^2131243337 is an apocalyptic number.

It is an amenable number.

2131243337 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131243337 is an equidigital number, since it uses as much as digits as its factorization.

2131243337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 29.

The square root of 2131243337 is about 46165.3911171562. The cubic root of 2131243337 is about 1286.8986526842.

Adding to 2131243337 its reverse (7333421312), we get a palindrome (9464664649).

The spelling of 2131243337 in words is "two billion, one hundred thirty-one million, two hundred forty-three thousand, three hundred thirty-seven".