1397231 has 8 divisors (see below), whose sum is σ = 1565904. Its totient is φ = 1235520.

The previous prime is 1397219. The next prime is 1397233. The reversal of 1397231 is 1327931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1397231 - 2⁶ = 1397167 is a prime.

It is a super-2 number, since 2×1397231² = 3904508934722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1397231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397233) 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 in 7 ways as a sum of consecutive naturals, for example, 1310 + ... + 2123.

It is an arithmetic number, because the mean of its divisors is an integer number (195738).

2^1397231 is an apocalyptic number.

1397231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1397231 is a deficient number, since it is larger than the sum of its proper divisors (168673).

1397231 is a wasteful number, since it uses less digits than its factorization.

1397231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481.

The product of its digits is 1134, while the sum is 26.

The square root of 1397231 is about 1182.0452614008. The cubic root of 1397231 is about 111.7950919661.

The spelling of 1397231 in words is "one million, three hundred ninety-seven thousand, two hundred thirty-one".