31201313225 has 12 divisors (see below), whose sum is σ = 39937681920. Its totient is φ = 24155854800.

The previous prime is 31201313141. The next prime is 31201313233. The reversal of 31201313225 is 52231310213.

It is not a de Polignac number, because 31201313225 - 2³⁰ = 30127571401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31201313225.

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, 20129105 + ... + 20130654.

It is an arithmetic number, because the mean of its divisors is an integer number (3328140160).

Almost surely, 2^31201313225 is an apocalyptic number.

It is an amenable number.

31201313225 is a deficient number, since it is larger than the sum of its proper divisors (8736368695).

31201313225 is a wasteful number, since it uses less digits than its factorization.

31201313225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40259800 (or 40259795 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 31201313225 its reverse (52231310213), we get a palindrome (83432623438).

The spelling of 31201313225 in words is "thirty-one billion, two hundred one million, three hundred thirteen thousand, two hundred twenty-five".