31113035225 has 6 divisors (see below), whose sum is σ = 38580163710. Its totient is φ = 24890428160.

The previous prime is 31113035201. The next prime is 31113035227. The reversal of 31113035225 is 52253031113.

It can be written as a sum of positive squares in 3 ways, for example, as 3984639376 + 27128395849 = 63124^2 + 164707^2 .

It is not a de Polignac number, because 31113035225 - 2¹⁴ = 31113018841 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31113035194 and 31113035203.

It is not an unprimeable number, because it can be changed into a prime (31113035227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622260680 + ... + 622260729.

It is an arithmetic number, because the mean of its divisors is an integer number (6430027285).

Almost surely, 2^31113035225 is an apocalyptic number.

It is an amenable number.

31113035225 is a deficient number, since it is larger than the sum of its proper divisors (7467128485).

31113035225 is a wasteful number, since it uses less digits than its factorization.

31113035225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244521419 (or 1244521414 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 31113035225 its reverse (52253031113), we get a palindrome (83366066338).

The spelling of 31113035225 in words is "thirty-one billion, one hundred thirteen million, thirty-five thousand, two hundred twenty-five".