1331323023 has 16 divisors (see below), whose sum is σ = 1911375360. Its totient is φ = 821179776.

The previous prime is 1331322991. The next prime is 1331323033. The reversal of 1331323023 is 3203231331.

1331323023 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1331323023 - 2⁵ = 1331322991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331323033) 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, 218215 + ... + 224232.

It is an arithmetic number, because the mean of its divisors is an integer number (119460960).

Almost surely, 2^1331323023 is an apocalyptic number.

1331323023 is a deficient number, since it is larger than the sum of its proper divisors (580052337).

1331323023 is a wasteful number, since it uses less digits than its factorization.

1331323023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442526.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1331323023 is about 36487.2994752969. The cubic root of 1331323023 is about 1100.0889798545.

Adding to 1331323023 its reverse (3203231331), we get a palindrome (4534554354).

The spelling of 1331323023 in words is "one billion, three hundred thirty-one million, three hundred twenty-three thousand, twenty-three".