1023130231021 has 4 divisors (see below), whose sum is σ = 1038400831552. Its totient is φ = 1007859630492.

The previous prime is 1023130231009. The next prime is 1023130231043. The reversal of 1023130231021 is 1201320313201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1023130231021 - 2²⁹ = 1022593360109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023130231021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023130231091) 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, 7635300165 + ... + 7635300298.

It is an arithmetic number, because the mean of its divisors is an integer number (259600207888).

Almost surely, 2^{1023130231021} is an apocalyptic number.

It is an amenable number.

1023130231021 is a deficient number, since it is larger than the sum of its proper divisors (15270600531).

1023130231021 is an equidigital number, since it uses as much as digits as its factorization.

1023130231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15270600530.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1023130231021 its reverse (1201320313201), we get a palindrome (2224450544222).

The spelling of 1023130231021 in words is "one trillion, twenty-three billion, one hundred thirty million, two hundred thirty-one thousand, twenty-one".