1331121023 has 8 divisors (see below), whose sum is σ = 1357928928. Its totient is φ = 1304375904.

The previous prime is 1331121017. The next prime is 1331121041. The reversal of 1331121023 is 3201211331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331121023 - 2²² = 1326926719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331120992 and 1331121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331121013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28361 + ... + 58877.

It is an arithmetic number, because the mean of its divisors is an integer number (169741116).

Almost surely, 2^1331121023 is an apocalyptic number.

1331121023 is a deficient number, since it is larger than the sum of its proper divisors (26807905).

1331121023 is an equidigital number, since it uses as much as digits as its factorization.

1331121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31393.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1331121023 is about 36484.5312838194. The cubic root of 1331121023 is about 1100.0333386590.

Adding to 1331121023 its reverse (3201211331), we get a palindrome (4532332354).

The spelling of 1331121023 in words is "one billion, three hundred thirty-one million, one hundred twenty-one thousand, twenty-three".