101531201 has 4 divisors (see below), whose sum is σ = 101892804. Its totient is φ = 101169600.

The previous prime is 101531189. The next prime is 101531203. The reversal of 101531201 is 102135101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77862976 + 23668225 = 8824^2 + 4865^2 .

It is a cyclic number.

It is not a de Polignac number, because 101531201 - 2¹⁴ = 101514817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101531203) 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, 180380 + ... + 180941.

It is an arithmetic number, because the mean of its divisors is an integer number (25473201).

Almost surely, 2^101531201 is an apocalyptic number.

It is an amenable number.

101531201 is a deficient number, since it is larger than the sum of its proper divisors (361603).

101531201 is an equidigital number, since it uses as much as digits as its factorization.

101531201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361602.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 101531201 is about 10076.2692004531. The cubic root of 101531201 is about 466.5159619378.

Adding to 101531201 its reverse (102135101), we get a palindrome (203666302).

The spelling of 101531201 in words is "one hundred one million, five hundred thirty-one thousand, two hundred one".