431312011 has 4 divisors (see below), whose sum is σ = 464489872. Its totient is φ = 398134152.

The previous prime is 431311987. The next prime is 431312023. The reversal of 431312011 is 110213134.

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

It is not a de Polignac number, because 431312011 - 2⁷ = 431311883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431312081) 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, 16588911 + ... + 16588936.

It is an arithmetic number, because the mean of its divisors is an integer number (116122468).

Almost surely, 2^431312011 is an apocalyptic number.

431312011 is a deficient number, since it is larger than the sum of its proper divisors (33177861).

431312011 is a wasteful number, since it uses less digits than its factorization.

431312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33177860.

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

The square root of 431312011 is about 20768.0526530534. The cubic root of 431312011 is about 755.5511149449.

Adding to 431312011 its reverse (110213134), we get a palindrome (541525145).

The spelling of 431312011 in words is "four hundred thirty-one million, three hundred twelve thousand, eleven".