31434211 has 4 divisors (see below), whose sum is σ = 32103072. Its totient is φ = 30765352.

The previous prime is 31434209. The next prime is 31434233. The reversal of 31434211 is 11243413.

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 31434211 - 2¹ = 31434209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31434251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334360 + ... + 334453.

It is an arithmetic number, because the mean of its divisors is an integer number (8025768).

Almost surely, 2^31434211 is an apocalyptic number.

31434211 is a deficient number, since it is larger than the sum of its proper divisors (668861).

31434211 is an equidigital number, since it uses as much as digits as its factorization.

31434211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668860.

The product of its digits is 288, while the sum is 19.

The square root of 31434211 is about 5606.6220668064. The cubic root of 31434211 is about 315.5979605108.

Adding to 31434211 its reverse (11243413), we get a palindrome (42677624).

The spelling of 31434211 in words is "thirty-one million, four hundred thirty-four thousand, two hundred eleven".