31122242344 has 8 divisors (see below), whose sum is σ = 58354204410. Its totient is φ = 15561121168.

The previous prime is 31122242341. The next prime is 31122242381. The reversal of 31122242344 is 44324222113.

It can be written as a sum of positive squares in only one way, i.e., 27718920100 + 3403322244 = 166490^2 + 58338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31122242344² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31122242341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945140139 + ... + 1945140154.

Almost surely, 2^31122242344 is an apocalyptic number.

It is an amenable number.

31122242344 is a deficient number, since it is larger than the sum of its proper divisors (27231962066).

31122242344 is a wasteful number, since it uses less digits than its factorization.

31122242344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890280299 (or 3890280295 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

Adding to 31122242344 its reverse (44324222113), we get a palindrome (75446464457).

The spelling of 31122242344 in words is "thirty-one billion, one hundred twenty-two million, two hundred forty-two thousand, three hundred forty-four".