100320002431 has 4 divisors (see below), whose sum is σ = 109440002664. Its totient is φ = 91200002200.

The previous prime is 100320002381. The next prime is 100320002449. The reversal of 100320002431 is 134200023001.

It is a happy number.

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 100320002431 - 2²⁵ = 100286447999 is a prime.

It is a super-2 number, since 2×100320002431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320002231) 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, 4560000100 + ... + 4560000121.

It is an arithmetic number, because the mean of its divisors is an integer number (27360000666).

Almost surely, 2^100320002431 is an apocalyptic number.

100320002431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100320002431 is a deficient number, since it is larger than the sum of its proper divisors (9120000233).

100320002431 is an equidigital number, since it uses as much as digits as its factorization.

100320002431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120000232.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 100320002431 its reverse (134200023001), we get a palindrome (234520025432).

The spelling of 100320002431 in words is "one hundred billion, three hundred twenty million, two thousand, four hundred thirty-one".