31122231214 has 4 divisors (see below), whose sum is σ = 46683346824. Its totient is φ = 15561115606.

The previous prime is 31122231187. The next prime is 31122231269. The reversal of 31122231214 is 41213222113.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7780557802 + ... + 7780557805.

It is an arithmetic number, because the mean of its divisors is an integer number (11670836706).

Almost surely, 2^31122231214 is an apocalyptic number.

31122231214 is a deficient number, since it is larger than the sum of its proper divisors (15561115610).

31122231214 is a wasteful number, since it uses less digits than its factorization.

31122231214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15561115609.

The product of its digits is 576, while the sum is 22.

Adding to 31122231214 its reverse (41213222113), we get a palindrome (72335453327).

The spelling of 31122231214 in words is "thirty-one billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred fourteen".