1315221033 has 16 divisors (see below), whose sum is σ = 2005108736. Its totient is φ = 751194000.

The previous prime is 1315221007. The next prime is 1315221041. The reversal of 1315221033 is 3301225131.

It is not a de Polignac number, because 1315221033 - 2¹² = 1315216937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315221073) 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, 33360 + ... + 61182.

It is an arithmetic number, because the mean of its divisors is an integer number (125319296).

Almost surely, 2^1315221033 is an apocalyptic number.

It is an amenable number.

1315221033 is a deficient number, since it is larger than the sum of its proper divisors (689887703).

1315221033 is a wasteful number, since it uses less digits than its factorization.

1315221033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30084.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1315221033 is about 36265.9762449600. The cubic root of 1315221033 is about 1095.6358859490.

Adding to 1315221033 its reverse (3301225131), we get a palindrome (4616446164).

The spelling of 1315221033 in words is "one billion, three hundred fifteen million, two hundred twenty-one thousand, thirty-three".