1321310 has 16 divisors (see below), whose sum is σ = 2413152. Its totient is φ = 520800.

The previous prime is 1321303. The next prime is 1321319. The reversal of 1321310 is 131231.

It is a super-2 number, since 2×1321310² = 3491720232200, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1321291 and 1321300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321319) 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, 221 + ... + 1640.

It is an arithmetic number, because the mean of its divisors is an integer number (150822).

2^1321310 is an apocalyptic number.

1321310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321310 is a deficient number, since it is larger than the sum of its proper divisors (1091842).

1321310 is a wasteful number, since it uses less digits than its factorization.

1321310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1321310 is about 1149.4824922547. The cubic root of 1321310 is about 109.7324074174.

Adding to 1321310 its reverse (131231), we get a palindrome (1452541).

The spelling of 1321310 in words is "one million, three hundred twenty-one thousand, three hundred ten".