2021131337 has 2 divisors, whose sum is σ = 2021131338. Its totient is φ = 2021131336.

The previous prime is 2021131303. The next prime is 2021131351. The reversal of 2021131337 is 7331311202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2021041936 + 89401 = 44956^2 + 299^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021131337 - 2²² = 2016937033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021131837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010565668 + 1010565669.

It is an arithmetic number, because the mean of its divisors is an integer number (1010565669).

Almost surely, 2^2021131337 is an apocalyptic number.

It is an amenable number.

2021131337 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021131337 is an equidigital number, since it uses as much as digits as its factorization.

2021131337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 2021131337 is about 44956.9943056695. The cubic root of 2021131337 is about 1264.3428160120.

Adding to 2021131337 its reverse (7331311202), we get a palindrome (9352442539).

The spelling of 2021131337 in words is "two billion, twenty-one million, one hundred thirty-one thousand, three hundred thirty-seven".