100531424 has 24 divisors (see below), whose sum is σ = 226196208. Its totient is φ = 43084800.

The previous prime is 100531397. The next prime is 100531427. The reversal of 100531424 is 424135001.

It is a super-2 number, since 2×100531424² = 20213134422935552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100531396 and 100531405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100531427) 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, 224177 + ... + 224624.

It is an arithmetic number, because the mean of its divisors is an integer number (9424842).

Almost surely, 2^100531424 is an apocalyptic number.

100531424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

100531424 is an abundant number, since it is smaller than the sum of its proper divisors (125664784).

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

100531424 is an equidigital number, since it uses as much as digits as its factorization.

100531424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448818 (or 448810 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 100531424 is about 10026.5359920563. The cubic root of 100531424 is about 464.9796483944.

Adding to 100531424 its reverse (424135001), we get a palindrome (524666425).

The spelling of 100531424 in words is "one hundred million, five hundred thirty-one thousand, four hundred twenty-four".