100243342431 has 24 divisors (see below), whose sum is σ = 148185722880. Its totient is φ = 65270322576.

The previous prime is 100243342421. The next prime is 100243342457. The reversal of 100243342431 is 134243342001.

It is not a de Polignac number, because 100243342431 - 2⁵ = 100243342399 is a prime.

It is a super-2 number, since 2×100243342431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100243342395 and 100243342404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100243342421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44755 + ... + 449988.

It is an arithmetic number, because the mean of its divisors is an integer number (6174405120).

Almost surely, 2^100243342431 is an apocalyptic number.

100243342431 is a deficient number, since it is larger than the sum of its proper divisors (47942380449).

100243342431 is a wasteful number, since it uses less digits than its factorization.

100243342431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495275 (or 495272 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 100243342431 its reverse (134243342001), we get a palindrome (234486684432).

The spelling of 100243342431 in words is "one hundred billion, two hundred forty-three million, three hundred forty-two thousand, four hundred thirty-one".