10302320421 has 40 divisors (see below), whose sum is σ = 15963907520. Its totient is φ = 6616427328.

The previous prime is 10302320419. The next prime is 10302320437. The reversal of 10302320421 is 12402320301.

10302320421 is a `hidden beast` number, since 1 + 0 + 302 + 320 + 42 + 1 = 666.

It is not a de Polignac number, because 10302320421 - 2¹ = 10302320419 is a prime.

It is a super-2 number, since 2×10302320421² (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 = 10302320394 and 10302320403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10302320411) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 234000 + ... + 274518.

It is an arithmetic number, because the mean of its divisors is an integer number (399097688).

Almost surely, 2^10302320421 is an apocalyptic number.

It is an amenable number.

10302320421 is a deficient number, since it is larger than the sum of its proper divisors (5661587099).

10302320421 is an equidigital number, since it uses as much as digits as its factorization.

10302320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40647 (or 40638 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 10302320421 its reverse (12402320301), we get a palindrome (22704640722).

The spelling of 10302320421 in words is "ten billion, three hundred two million, three hundred twenty thousand, four hundred twenty-one".