1331270 has 32 divisors (see below), whose sum is σ = 2612736. Its totient is φ = 486400.

The previous prime is 1331269. The next prime is 1331279. The reversal of 1331270 is 721331.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6875 + ... + 7065.

It is an arithmetic number, because the mean of its divisors is an integer number (81648).

2^1331270 is an apocalyptic number.

1331270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331270 is a deficient number, since it is larger than the sum of its proper divisors (1281466).

1331270 is a wasteful number, since it uses less digits than its factorization.

1331270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 1331270 is about 1153.8067429167. The cubic root of 1331270 is about 110.0074375136.

The spelling of 1331270 in words is "one million, three hundred thirty-one thousand, two hundred seventy".