100340431 has 4 divisors (see below), whose sum is σ = 100402432. Its totient is φ = 100278432.

The previous prime is 100340423. The next prime is 100340453. The reversal of 100340431 is 134043001.

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 100340431 - 2³ = 100340423 is a prime.

It is a super-2 number, since 2×100340431² = 20136404186531522, which 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 (100340491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28506 + ... + 31831.

It is an arithmetic number, because the mean of its divisors is an integer number (25100608).

Almost surely, 2^100340431 is an apocalyptic number.

100340431 is a deficient number, since it is larger than the sum of its proper divisors (62001).

100340431 is an equidigital number, since it uses as much as digits as its factorization.

100340431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62000.

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

The square root of 100340431 is about 10017.0070879480. The cubic root of 100340431 is about 464.6850003664.

Adding to 100340431 its reverse (134043001), we get a palindrome (234383432).

The spelling of 100340431 in words is "one hundred million, three hundred forty thousand, four hundred thirty-one".