431231011 has 4 divisors (see below), whose sum is σ = 453927400. Its totient is φ = 408534624.

The previous prime is 431230991. The next prime is 431231033. The reversal of 431231011 is 110132134.

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 431231011 - 2¹⁷ = 431099939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431231051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11348166 + ... + 11348203.

It is an arithmetic number, because the mean of its divisors is an integer number (113481850).

Almost surely, 2^431231011 is an apocalyptic number.

431231011 is a deficient number, since it is larger than the sum of its proper divisors (22696389).

431231011 is a wasteful number, since it uses less digits than its factorization.

431231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22696388.

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

The square root of 431231011 is about 20766.1024508693. The cubic root of 431231011 is about 755.5038147150.

Adding to 431231011 its reverse (110132134), we get a palindrome (541363145).

The spelling of 431231011 in words is "four hundred thirty-one million, two hundred thirty-one thousand, eleven".