100038531 has 8 divisors (see below), whose sum is σ = 133458624. Its totient is φ = 66655400.

The previous prime is 100038527. The next prime is 100038539. The reversal of 100038531 is 135830001.

It is a happy number.

100038531 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100038531 - 2² = 100038527 is a prime.

It is a super-2 number, since 2×100038531² = 20015415369275922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100038498 and 100038507.

It is not an unprimeable number, because it can be changed into a prime (100038539) 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 7 ways as a sum of consecutive naturals, for example, 2145 + ... + 14306.

It is an arithmetic number, because the mean of its divisors is an integer number (16682328).

Almost surely, 2^100038531 is an apocalyptic number.

100038531 is a deficient number, since it is larger than the sum of its proper divisors (33420093).

100038531 is a wasteful number, since it uses less digits than its factorization.

100038531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18481.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 100038531 is about 10001.9263644560. The cubic root of 100038531 is about 464.2184907259.

Adding to 100038531 its reverse (135830001), we get a palindrome (235868532).

The spelling of 100038531 in words is "one hundred million, thirty-eight thousand, five hundred thirty-one".