31225424243 has 36 divisors (see below), whose sum is σ = 36413722800. Its totient is φ = 26614644672.

The previous prime is 31225424221. The next prime is 31225424257. The reversal of 31225424243 is 34242452213.

It is not a de Polignac number, because 31225424243 - 2¹⁸ = 31225162099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31225424213) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5780858 + ... + 5786256.

It is an arithmetic number, because the mean of its divisors is an integer number (1011492300).

Almost surely, 2^31225424243 is an apocalyptic number.

31225424243 is a deficient number, since it is larger than the sum of its proper divisors (5188298557).

31225424243 is a wasteful number, since it uses less digits than its factorization.

31225424243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516 (or 5464 counting only the distinct ones).

The product of its digits is 46080, while the sum is 32.

Adding to 31225424243 its reverse (34242452213), we get a palindrome (65467876456).

The spelling of 31225424243 in words is "thirty-one billion, two hundred twenty-five million, four hundred twenty-four thousand, two hundred forty-three".