1447331357 has 2 divisors, whose sum is σ = 1447331358. Its totient is φ = 1447331356.

The previous prime is 1447331299. The next prime is 1447331359. The reversal of 1447331357 is 7531337441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1335098521 + 112232836 = 36539^2 + 10594^2 .

It is a cyclic number.

It is not a de Polignac number, because 1447331357 - 2⁶ = 1447331293 is a prime.

It is a super-2 number, since 2×1447331357² = 4189536113910922898, which contains 22 as substring.

Together with 1447331359, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1447331357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447331359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723665678 + 723665679.

It is an arithmetic number, because the mean of its divisors is an integer number (723665679).

Almost surely, 2^1447331357 is an apocalyptic number.

It is an amenable number.

1447331357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447331357 is an equidigital number, since it uses as much as digits as its factorization.

1447331357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 38.

The square root of 1447331357 is about 38043.8083924310. The cubic root of 1447331357 is about 1131.1564001717.

Adding to 1447331357 its reverse (7531337441), we get a palindrome (8978668798).

The spelling of 1447331357 in words is "one billion, four hundred forty-seven million, three hundred thirty-one thousand, three hundred fifty-seven".