1371397 has 2 divisors, whose sum is σ = 1371398. Its totient is φ = 1371396.

The previous prime is 1371389. The next prime is 1371431. The reversal of 1371397 is 7931731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 58081 = 1146^2 + 241^2 .

It is an emirp because it is prime and its reverse (7931731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1371397 - 2³ = 1371389 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685698 + 685699.

It is an arithmetic number, because the mean of its divisors is an integer number (685699).

2^1371397 is an apocalyptic number.

It is an amenable number.

1371397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371397 is an equidigital number, since it uses as much as digits as its factorization.

1371397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3969, while the sum is 31.

The square root of 1371397 is about 1171.0666078409. The cubic root of 1371397 is about 111.1017922925.

The spelling of 1371397 in words is "one million, three hundred seventy-one thousand, three hundred ninety-seven".