1331357 has 8 divisors (see below), whose sum is σ = 1396992. Its totient is φ = 1267200.

The previous prime is 1331347. The next prime is 1331377. The reversal of 1331357 is 7531331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1331357 - 2⁶ = 1331293 is a prime.

It is a super-2 number, since 2×1331357² = 3545022922898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331327) 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, 1757 + ... + 2397.

It is an arithmetic number, because the mean of its divisors is an integer number (174624).

2^1331357 is an apocalyptic number.

It is an amenable number.

1331357 is a deficient number, since it is larger than the sum of its proper divisors (65635).

1331357 is an equidigital number, since it uses as much as digits as its factorization.

1331357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739.

The product of its digits is 945, while the sum is 23.

The square root of 1331357 is about 1153.8444435885. The cubic root of 1331357 is about 110.0098338316.

Adding to 1331357 its reverse (7531331), we get a palindrome (8862688).

The spelling of 1331357 in words is "one million, three hundred thirty-one thousand, three hundred fifty-seven".