31214222211 has 4 divisors (see below), whose sum is σ = 41618962952. Its totient is φ = 20809481472.

The previous prime is 31214222197. The next prime is 31214222267. The reversal of 31214222211 is 11222241213.

It is a happy number.

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

It is not a de Polignac number, because 31214222211 - 2¹³ = 31214214019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31214223211) 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, 5202370366 + ... + 5202370371.

It is an arithmetic number, because the mean of its divisors is an integer number (10404740738).

Almost surely, 2^31214222211 is an apocalyptic number.

31214222211 is a deficient number, since it is larger than the sum of its proper divisors (10404740741).

31214222211 is a wasteful number, since it uses less digits than its factorization.

31214222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10404740740.

The product of its digits is 384, while the sum is 21.

Adding to 31214222211 its reverse (11222241213), we get a palindrome (42436463424).

The spelling of 31214222211 in words is "thirty-one billion, two hundred fourteen million, two hundred twenty-two thousand, two hundred eleven".