100022531 has 4 divisors (see below), whose sum is σ = 114311472. Its totient is φ = 85733592.

The previous prime is 100022521. The next prime is 100022569. The reversal of 100022531 is 135220001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-100022531 is a prime.

It is a super-2 number, since 2×100022531² = 20009013415291922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100022521) 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, 7144460 + ... + 7144473.

It is an arithmetic number, because the mean of its divisors is an integer number (28577868).

Almost surely, 2^100022531 is an apocalyptic number.

100022531 is a deficient number, since it is larger than the sum of its proper divisors (14288941).

100022531 is an equidigital number, since it uses as much as digits as its factorization.

100022531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288940.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 100022531 is about 10001.1264865514. The cubic root of 100022531 is about 464.1937406228.

Adding to 100022531 its reverse (135220001), we get a palindrome (235242532).

The spelling of 100022531 in words is "one hundred million, twenty-two thousand, five hundred thirty-one".