2123357 has 2 divisors, whose sum is σ = 2123358. Its totient is φ = 2123356.

The previous prime is 2123353. The next prime is 2123369. The reversal of 2123357 is 7533212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2105401 + 17956 = 1451^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123357 - 2² = 2123353 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 2¹⁹ + 3⁷ + 3¹³ + 5³ + 7⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061678 + 1061679.

It is an arithmetic number, because the mean of its divisors is an integer number (1061679).

2^2123357 is an apocalyptic number.

It is an amenable number.

2123357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123357 is an equidigital number, since it uses as much as digits as its factorization.

2123357 is an evil number, because the sum of its binary digits is even.

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

The square root of 2123357 is about 1457.1743203886. The cubic root of 2123357 is about 128.5309367493.

Adding to 2123357 its reverse (7533212), we get a palindrome (9656569).

The spelling of 2123357 in words is "two million, one hundred twenty-three thousand, three hundred fifty-seven".