1303257 has 8 divisors (see below), whose sum is σ = 1749376. Its totient is φ = 862992.

The previous prime is 1303243. The next prime is 1303261. The reversal of 1303257 is 7523031.

It is a happy number.

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

It is not a de Polignac number, because 1303257 - 2⁴ = 1303241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913 + ... + 1854.

It is an arithmetic number, because the mean of its divisors is an integer number (218672).

2^1303257 is an apocalyptic number.

It is an amenable number.

1303257 is a deficient number, since it is larger than the sum of its proper divisors (446119).

1303257 is a wasteful number, since it uses less digits than its factorization.

1303257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2927.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 1303257 is about 1141.6028205992. The cubic root of 1303257 is about 109.2303575918.

Adding to 1303257 its reverse (7523031), we get a palindrome (8826288).

The spelling of 1303257 in words is "one million, three hundred three thousand, two hundred fifty-seven".