31134211 has 4 divisors (see below), whose sum is σ = 31893624. Its totient is φ = 30374800.

The previous prime is 31134143. The next prime is 31134221. The reversal of 31134211 is 11243113.

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 31134211 - 2⁷ = 31134083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31134221) 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, 379645 + ... + 379726.

It is an arithmetic number, because the mean of its divisors is an integer number (7973406).

Almost surely, 2^31134211 is an apocalyptic number.

31134211 is a deficient number, since it is larger than the sum of its proper divisors (759413).

31134211 is an equidigital number, since it uses as much as digits as its factorization.

31134211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759412.

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

The square root of 31134211 is about 5579.8038495990. The cubic root of 31134211 is about 314.5907543396.

Adding to 31134211 its reverse (11243113), we get a palindrome (42377324).

The spelling of 31134211 in words is "thirty-one million, one hundred thirty-four thousand, two hundred eleven".