1003131223021 has 8 divisors (see below), whose sum is σ = 1073824682400. Its totient is φ = 934227471600.

The previous prime is 1003131223009. The next prime is 1003131223063. The reversal of 1003131223021 is 1203221313001.

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 1003131223021 - 2³¹ = 1000983739373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 1003131223021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003131223091) 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, 447425830 + ... + 447428071.

It is an arithmetic number, because the mean of its divisors is an integer number (134228085300).

Almost surely, 2^{1003131223021} is an apocalyptic number.

It is an amenable number.

1003131223021 is a deficient number, since it is larger than the sum of its proper divisors (70693459379).

1003131223021 is an equidigital number, since it uses as much as digits as its factorization.

1003131223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894853979.

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

Adding to 1003131223021 its reverse (1203221313001), we get a palindrome (2206352536022).

The spelling of 1003131223021 in words is "one trillion, three billion, one hundred thirty-one million, two hundred twenty-three thousand, twenty-one".