31224240231225 has 12 divisors (see below), whose sum is σ = 51624077182416. Its totient is φ = 16652928123280.

The previous prime is 31224240231211. The next prime is 31224240231263. The reversal of 31224240231225 is 52213204242213.

It is not a de Polignac number, because 31224240231225 - 2¹⁸ = 31224239969081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208161601467 + ... + 208161601616.

It is an arithmetic number, because the mean of its divisors is an integer number (4302006431868).

Almost surely, 2^{31224240231225} is an apocalyptic number.

It is an amenable number.

31224240231225 is a deficient number, since it is larger than the sum of its proper divisors (20399836951191).

31224240231225 is a wasteful number, since it uses less digits than its factorization.

31224240231225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416323203096 (or 416323203091 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 31224240231225 its reverse (52213204242213), we get a palindrome (83437444473438).

The spelling of 31224240231225 in words is "thirty-one trillion, two hundred twenty-four billion, two hundred forty million, two hundred thirty-one thousand, two hundred twenty-five".