10203020031 has 4 divisors (see below), whose sum is σ = 13604026712. Its totient is φ = 6802013352.

The previous prime is 10203019961. The next prime is 10203020053. The reversal of 10203020031 is 13002030201.

It is a happy number.

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

It is not a de Polignac number, because 10203020031 - 2¹⁴ = 10203003647 is a prime.

It is a super-2 number, since 2×10203020031² (a number of 21 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 = 10203019989 and 10203020016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203020071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700503336 + ... + 1700503341.

It is an arithmetic number, because the mean of its divisors is an integer number (3401006678).

Almost surely, 2^10203020031 is an apocalyptic number.

10203020031 is a deficient number, since it is larger than the sum of its proper divisors (3401006681).

10203020031 is an equidigital number, since it uses as much as digits as its factorization.

10203020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401006680.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 10203020031 its reverse (13002030201), we get a palindrome (23205050232).

The spelling of 10203020031 in words is "ten billion, two hundred three million, twenty thousand, thirty-one".