100531563 has 16 divisors (see below), whose sum is σ = 147044352. Its totient is φ = 60588000.

The previous prime is 100531547. The next prime is 100531567. The reversal of 100531563 is 365135001.

It is not a de Polignac number, because 100531563 - 2⁴ = 100531547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100531567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2443 + ... + 14388.

It is an arithmetic number, because the mean of its divisors is an integer number (9190272).

Almost surely, 2^100531563 is an apocalyptic number.

100531563 is a deficient number, since it is larger than the sum of its proper divisors (46512789).

100531563 is a wasteful number, since it uses less digits than its factorization.

100531563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17026.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 100531563 is about 10026.5429236602. The cubic root of 100531563 is about 464.9798626960.

Adding to 100531563 its reverse (365135001), we get a palindrome (465666564).

The spelling of 100531563 in words is "one hundred million, five hundred thirty-one thousand, five hundred sixty-three".