1331457 has 8 divisors (see below), whose sum is σ = 1879776. Its totient is φ = 835392.

The previous prime is 1331443. The next prime is 1331471. The reversal of 1331457 is 7541331.

It is an interprime number because it is at equal distance from previous prime (1331443) and next prime (1331471).

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

It is not a de Polignac number, because 1331457 - 2⁷ = 1331329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331437) 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, 13003 + ... + 13104.

It is an arithmetic number, because the mean of its divisors is an integer number (234972).

2^1331457 is an apocalyptic number.

1331457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1331457 is a deficient number, since it is larger than the sum of its proper divisors (548319).

1331457 is a wasteful number, since it uses less digits than its factorization.

1331457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26127.

The product of its digits is 1260, while the sum is 24.

The square root of 1331457 is about 1153.8877761724. The cubic root of 1331457 is about 110.0125880911.

Adding to 1331457 its reverse (7541331), we get a palindrome (8872788).

The spelling of 1331457 in words is "one million, three hundred thirty-one thousand, four hundred fifty-seven".