10321420031 has 4 divisors (see below), whose sum is σ = 11115375432. Its totient is φ = 9527464632.

The previous prime is 10321419971. The next prime is 10321420033. The reversal of 10321420031 is 13002412301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10321420031 is a prime.

It is a super-2 number, since 2×10321420031² (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 = 10321419991 and 10321420009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10321420033) 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, 396977681 + ... + 396977706.

It is an arithmetic number, because the mean of its divisors is an integer number (2778843858).

Almost surely, 2^10321420031 is an apocalyptic number.

10321420031 is a deficient number, since it is larger than the sum of its proper divisors (793955401).

10321420031 is an equidigital number, since it uses as much as digits as its factorization.

10321420031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793955400.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10321420031 its reverse (13002412301), we get a palindrome (23323832332).

The spelling of 10321420031 in words is "ten billion, three hundred twenty-one million, four hundred twenty thousand, thirty-one".