131143201 has 4 divisors (see below), whose sum is σ = 149877952. Its totient is φ = 112408452.

The previous prime is 131143153. The next prime is 131143211. The reversal of 131143201 is 102341131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102341131 = 6581 ⋅15551.

It is a cyclic number.

It is not a de Polignac number, because 131143201 - 2¹³ = 131135009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131143211) 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, 9367365 + ... + 9367378.

It is an arithmetic number, because the mean of its divisors is an integer number (37469488).

Almost surely, 2^131143201 is an apocalyptic number.

It is an amenable number.

131143201 is a deficient number, since it is larger than the sum of its proper divisors (18734751).

131143201 is an equidigital number, since it uses as much as digits as its factorization.

131143201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18734750.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131143201 is about 11451.7771983217. Note that the first 3 decimals coincide. The cubic root of 131143201 is about 508.0602995878.

Adding to 131143201 its reverse (102341131), we get a palindrome (233484332).

It can be divided in two parts, 13114 and 3201, that multiplied together give a palindrome (41977914).

The spelling of 131143201 in words is "one hundred thirty-one million, one hundred forty-three thousand, two hundred one".