13231357 has 2 divisors, whose sum is σ = 13231358. Its totient is φ = 13231356.

The previous prime is 13231343. The next prime is 13231367. The reversal of 13231357 is 75313231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13111641 + 119716 = 3621^2 + 346^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231357 - 2¹⁹ = 12707069 is a prime.

It is a super-2 number, since 2×13231357² = 350137616122898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615678 + 6615679.

It is an arithmetic number, because the mean of its divisors is an integer number (6615679).

Almost surely, 2^13231357 is an apocalyptic number.

It is an amenable number.

13231357 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231357 is an equidigital number, since it uses as much as digits as its factorization.

13231357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 25.

The square root of 13231357 is about 3637.4932302343. The cubic root of 13231357 is about 236.5201409573.

Adding to 13231357 its reverse (75313231), we get a palindrome (88544588).

The spelling of 13231357 in words is "thirteen million, two hundred thirty-one thousand, three hundred fifty-seven".