1333813 has 16 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 1152576.

The previous prime is 1333811. The next prime is 1333831. The reversal of 1333813 is 3183331.

It is a cyclic number.

It is not a de Polignac number, because 1333813 - 2¹ = 1333811 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22578 + ... + 22636.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1333813 is an apocalyptic number.

1333813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1333813 is a deficient number, since it is larger than the sum of its proper divisors (198347).

1333813 is a wasteful number, since it uses less digits than its factorization.

1333813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156.

The product of its digits is 648, while the sum is 22.

The square root of 1333813 is about 1154.9082214618. The cubic root of 1333813 is about 110.0774385844.

It can be divided in two parts, 13 and 33813, that multiplied together give a square (439569 = 663²).

The spelling of 1333813 in words is "one million, three hundred thirty-three thousand, eight hundred thirteen".