100531201 has 4 divisors (see below), whose sum is σ = 101086804. Its totient is φ = 99975600.

The previous prime is 100531199. The next prime is 100531231. The reversal of 100531201 is 102135001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102135001 = 67 ⋅1524403.

It can be written as a sum of positive squares in 2 ways, for example, as 1628176 + 98903025 = 1276^2 + 9945^2 .

It is a cyclic number.

It is not a de Polignac number, because 100531201 - 2¹ = 100531199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100531231) 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, 277530 + ... + 277891.

It is an arithmetic number, because the mean of its divisors is an integer number (25271701).

Almost surely, 2^100531201 is an apocalyptic number.

It is an amenable number.

100531201 is a deficient number, since it is larger than the sum of its proper divisors (555603).

100531201 is an equidigital number, since it uses as much as digits as its factorization.

100531201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555602.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 100531201 is about 10026.5248715594. The cubic root of 100531201 is about 464.9793045863.

Adding to 100531201 its reverse (102135001), we get a palindrome (202666202).

The spelling of 100531201 in words is "one hundred million, five hundred thirty-one thousand, two hundred one".