1331331023 has 4 divisors (see below), whose sum is σ = 1452361128. Its totient is φ = 1210300920.

The previous prime is 1331330999. The next prime is 1331331061. The reversal of 1331331023 is 3201331331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331331023 - 2¹⁴ = 1331314639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331330986 and 1331331004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331330023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60515036 + ... + 60515057.

It is an arithmetic number, because the mean of its divisors is an integer number (363090282).

Almost surely, 2^1331331023 is an apocalyptic number.

1331331023 is a deficient number, since it is larger than the sum of its proper divisors (121030105).

1331331023 is a wasteful number, since it uses less digits than its factorization.

1331331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121030104.

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

The square root of 1331331023 is about 36487.4091023191. The cubic root of 1331331023 is about 1100.0911833503.

Adding to 1331331023 its reverse (3201331331), we get a palindrome (4532662354).

The spelling of 1331331023 in words is "one billion, three hundred thirty-one million, three hundred thirty-one thousand, twenty-three".