31122442245 has 16 divisors (see below), whose sum is σ = 50176032192. Its totient is φ = 16471927680.

The previous prime is 31122442213. The next prime is 31122442271. The reversal of 31122442245 is 54224422113.

It is a happy number.

It is not a de Polignac number, because 31122442245 - 2⁵ = 31122442213 is a prime.

It is a super-2 number, since 2×31122442245² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7917232 + ... + 7921161.

It is an arithmetic number, because the mean of its divisors is an integer number (3136002012).

Almost surely, 2^31122442245 is an apocalyptic number.

It is an amenable number.

31122442245 is a deficient number, since it is larger than the sum of its proper divisors (19053589947).

31122442245 is a wasteful number, since it uses less digits than its factorization.

31122442245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15838532.

The product of its digits is 15360, while the sum is 30.

Adding to 31122442245 its reverse (54224422113), we get a palindrome (85346864358).

The spelling of 31122442245 in words is "thirty-one billion, one hundred twenty-two million, four hundred forty-two thousand, two hundred forty-five".