31324370225 has 6 divisors (see below), whose sum is σ = 38842219110. Its totient is φ = 25059496160.

The previous prime is 31324370201. The next prime is 31324370227. The reversal of 31324370225 is 52207342313.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4684581136 + 26639789089 = 68444^2 + 163217^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31324370225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31324370191 and 31324370200.

It is not an unprimeable number, because it can be changed into a prime (31324370227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 626487380 + ... + 626487429.

It is an arithmetic number, because the mean of its divisors is an integer number (6473703185).

Almost surely, 2^31324370225 is an apocalyptic number.

It is an amenable number.

31324370225 is a deficient number, since it is larger than the sum of its proper divisors (7517848885).

31324370225 is a wasteful number, since it uses less digits than its factorization.

31324370225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252974819 (or 1252974814 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The spelling of 31324370225 in words is "thirty-one billion, three hundred twenty-four million, three hundred seventy thousand, two hundred twenty-five".