31122341225 has 6 divisors (see below), whose sum is σ = 38591703150. Its totient is φ = 24897872960.

The previous prime is 31122341219. The next prime is 31122341291. The reversal of 31122341225 is 52214322113.

It can be written as a sum of positive squares in 3 ways, for example, as 249039961 + 30873301264 = 15781^2 + 175708^2 .

It is not a de Polignac number, because 31122341225 - 2³⁴ = 13942472041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31122341194 and 31122341203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622446800 + ... + 622446849.

It is an arithmetic number, because the mean of its divisors is an integer number (6431950525).

Almost surely, 2^31122341225 is an apocalyptic number.

It is an amenable number.

31122341225 is a deficient number, since it is larger than the sum of its proper divisors (7469361925).

31122341225 is a wasteful number, since it uses less digits than its factorization.

31122341225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244893659 (or 1244893654 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

Adding to 31122341225 its reverse (52214322113), we get a palindrome (83336663338).

The spelling of 31122341225 in words is "thirty-one billion, one hundred twenty-two million, three hundred forty-one thousand, two hundred twenty-five".