1331023133 has 16 divisors (see below), whose sum is σ = 1516738176. Its totient is φ = 1156203840.

The previous prime is 1331023117. The next prime is 1331023151. The reversal of 1331023133 is 3313201331.

It is not a de Polignac number, because 1331023133 - 2⁴ = 1331023117 is a prime.

It is a super-2 number, since 2×1331023133² = 3543245161162271378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331023103) 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, 310835 + ... + 315087.

It is an arithmetic number, because the mean of its divisors is an integer number (94796136).

Almost surely, 2^1331023133 is an apocalyptic number.

It is an amenable number.

1331023133 is a deficient number, since it is larger than the sum of its proper divisors (185715043).

1331023133 is a wasteful number, since it uses less digits than its factorization.

1331023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1331023133 is about 36483.1897317107. The cubic root of 1331023133 is about 1100.0063726904.

Adding to 1331023133 its reverse (3313201331), we get a palindrome (4644224464).

The spelling of 1331023133 in words is "one billion, three hundred thirty-one million, twenty-three thousand, one hundred thirty-three".