1321032001023 has 32 divisors (see below), whose sum is σ = 2239905016320. Its totient is φ = 753782915520.

The previous prime is 1321032001021. The next prime is 1321032001031. The reversal of 1321032001023 is 3201002301231.

1321032001023 is a `hidden beast` number, since 1 + 321 + 0 + 320 + 0 + 1 + 0 + 23 = 666.

It is not a de Polignac number, because 1321032001023 - 2¹ = 1321032001021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321032000987 and 1321032001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321032001021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4926990 + ... + 5188187.

It is an arithmetic number, because the mean of its divisors is an integer number (69997031760).

Almost surely, 2^{1321032001023} is an apocalyptic number.

1321032001023 is a deficient number, since it is larger than the sum of its proper divisors (918873015297).

1321032001023 is a wasteful number, since it uses less digits than its factorization.

1321032001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10115884 (or 10115878 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1321032001023 its reverse (3201002301231), we get a palindrome (4522034302254).

The spelling of 1321032001023 in words is "one trillion, three hundred twenty-one billion, thirty-two million, one thousand, twenty-three".