1021430331223 has 32 divisors (see below), whose sum is σ = 1134873100800. Its totient is φ = 914969696256.

The previous prime is 1021430331209. The next prime is 1021430331241. The reversal of 1021430331223 is 3221330341201.

It is not a de Polignac number, because 1021430331223 - 2²⁹ = 1020893460311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021434331223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18688111 + ... + 18742687.

It is an arithmetic number, because the mean of its divisors is an integer number (35464784400).

Almost surely, 2^{1021430331223} is an apocalyptic number.

1021430331223 is a deficient number, since it is larger than the sum of its proper divisors (113442769577).

1021430331223 is a wasteful number, since it uses less digits than its factorization.

1021430331223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55111.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1021430331223 its reverse (3221330341201), we get a palindrome (4242760672424).

The spelling of 1021430331223 in words is "one trillion, twenty-one billion, four hundred thirty million, three hundred thirty-one thousand, two hundred twenty-three".