431240133 has 16 divisors (see below), whose sum is σ = 604316160. Its totient is φ = 273009264.

The previous prime is 431240129. The next prime is 431240153. The reversal of 431240133 is 331042134.

It is not a de Polignac number, because 431240133 - 2² = 431240129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431240113) 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, 12891 + ... + 32072.

It is an arithmetic number, because the mean of its divisors is an integer number (37769760).

Almost surely, 2^431240133 is an apocalyptic number.

It is an amenable number.

431240133 is a deficient number, since it is larger than the sum of its proper divisors (173076027).

431240133 is a wasteful number, since it uses less digits than its factorization.

431240133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45128.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 431240133 is about 20766.3220864938. The cubic root of 431240133 is about 755.5091418344.

Adding to 431240133 its reverse (331042134), we get a palindrome (762282267).

The spelling of 431240133 in words is "four hundred thirty-one million, two hundred forty thousand, one hundred thirty-three".