10203021013231 has 4 divisors (see below), whose sum is σ = 10420106566752. Its totient is φ = 9985935459712.

The previous prime is 10203021013181. The next prime is 10203021013249. The reversal of 10203021013231 is 13231012030201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10203021013231 - 2¹⁹ = 10203020488943 is a prime.

It is a super-2 number, since 2×10203021013231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10203021013199 and 10203021013208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203021013261) 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, 108542776690 + ... + 108542776783.

It is an arithmetic number, because the mean of its divisors is an integer number (2605026641688).

Almost surely, 2^{10203021013231} is an apocalyptic number.

10203021013231 is a deficient number, since it is larger than the sum of its proper divisors (217085553521).

10203021013231 is an equidigital number, since it uses as much as digits as its factorization.

10203021013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217085553520.

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

Adding to 10203021013231 its reverse (13231012030201), we get a palindrome (23434033043432).

The spelling of 10203021013231 in words is "ten trillion, two hundred three billion, twenty-one million, thirteen thousand, two hundred thirty-one".