2231357 has 2 divisors, whose sum is σ = 2231358. Its totient is φ = 2231356.

The previous prime is 2231351. The next prime is 2231371. The reversal of 2231357 is 7531322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1692601 + 538756 = 1301^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231357 - 2⁶ = 2231293 is a prime.

It is a super-3 number, since 3×2231357³ = 33329471993077968879, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115678 + 1115679.

It is an arithmetic number, because the mean of its divisors is an integer number (1115679).

2^2231357 is an apocalyptic number.

It is an amenable number.

2231357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231357 is an equidigital number, since it uses as much as digits as its factorization.

2231357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 23.

The square root of 2231357 is about 1493.7727404127. The cubic root of 2231357 is about 130.6741508220.

Adding to 2231357 its reverse (7531322), we get a palindrome (9762679).

The spelling of 2231357 in words is "two million, two hundred thirty-one thousand, three hundred fifty-seven".