10021434431 has 4 divisors (see below), whose sum is σ = 10610930592. Its totient is φ = 9431938272.

The previous prime is 10021434419. The next prime is 10021434469. The reversal of 10021434431 is 13443412001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13443412001 = 71 ⋅189343831.

It is a cyclic number.

It is not a de Polignac number, because 10021434431 - 2¹⁰ = 10021433407 is a prime.

It is a super-2 number, since 2×10021434431² (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 = 10021434397 and 10021434406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021434481) 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, 294748055 + ... + 294748088.

It is an arithmetic number, because the mean of its divisors is an integer number (2652732648).

Almost surely, 2^10021434431 is an apocalyptic number.

10021434431 is a deficient number, since it is larger than the sum of its proper divisors (589496161).

10021434431 is an equidigital number, since it uses as much as digits as its factorization.

10021434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589496160.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 10021434431 its reverse (13443412001), we get a palindrome (23464846432).

The spelling of 10021434431 in words is "ten billion, twenty-one million, four hundred thirty-four thousand, four hundred thirty-one".