1331313033 has 16 divisors (see below), whose sum is σ = 1870315520. Its totient is φ = 840016656.

The previous prime is 1331313031. The next prime is 1331313041. The reversal of 1331313033 is 3303131331.

It is not a de Polignac number, because 1331313033 - 2¹ = 1331313031 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331313031) 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, 51216 + ... + 72702.

It is an arithmetic number, because the mean of its divisors is an integer number (116894720).

Almost surely, 2^1331313033 is an apocalyptic number.

It is an amenable number.

1331313033 is a deficient number, since it is larger than the sum of its proper divisors (539002487).

1331313033 is a wasteful number, since it uses less digits than its factorization.

1331313033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22596.

The product of its (nonzero) digits is 729, while the sum is 21.

The square root of 1331313033 is about 36487.1625780904. The cubic root of 1331313033 is about 1100.0862282267.

Adding to 1331313033 its reverse (3303131331), we get a palindrome (4634444364).

The spelling of 1331313033 in words is "one billion, three hundred thirty-one million, three hundred thirteen thousand, thirty-three".