100031430 has 32 divisors (see below), whose sum is σ = 240599808. Its totient is φ = 26616800.

The previous prime is 100031419. The next prime is 100031443. The reversal of 100031430 is 34130001.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11335 + ... + 18125.

It is an arithmetic number, because the mean of its divisors is an integer number (7518744).

Almost surely, 2^100031430 is an apocalyptic number.

100031430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100031430 is an abundant number, since it is smaller than the sum of its proper divisors (140568378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100031430 is a wasteful number, since it uses less digits than its factorization.

100031430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7292.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 100031430 is about 10001.5713765388. The cubic root of 100031430 is about 464.2075066465.

Adding to 100031430 its reverse (34130001), we get a palindrome (134161431).

The spelling of 100031430 in words is "one hundred million, thirty-one thousand, four hundred thirty".