431201131 has 4 divisors (see below), whose sum is σ = 438270064. Its totient is φ = 424132200.

The previous prime is 431201129. The next prime is 431201159. The reversal of 431201131 is 131102134.

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

It is a cyclic number.

It is not a de Polignac number, because 431201131 - 2¹ = 431201129 is a prime.

It is a super-2 number, since 2×431201131² = 371868830751358322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431201101) 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, 3534375 + ... + 3534496.

It is an arithmetic number, because the mean of its divisors is an integer number (109567516).

Almost surely, 2^431201131 is an apocalyptic number.

431201131 is a deficient number, since it is larger than the sum of its proper divisors (7068933).

431201131 is an equidigital number, since it uses as much as digits as its factorization.

431201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068932.

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

The square root of 431201131 is about 20765.3829967087. The cubic root of 431201131 is about 755.4863646903.

Adding to 431201131 its reverse (131102134), we get a palindrome (562303265).

The spelling of 431201131 in words is "four hundred thirty-one million, two hundred one thousand, one hundred thirty-one".