31423404325 has 12 divisors (see below), whose sum is σ = 38979478368. Its totient is φ = 25129396400.

The previous prime is 31423404301. The next prime is 31423404329. The reversal of 31423404325 is 52340432413.

It is a happy number.

It is not a de Polignac number, because 31423404325 - 2²¹ = 31421307173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423404329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164047 + ... + 299596.

It is an arithmetic number, because the mean of its divisors is an integer number (3248289864).

Almost surely, 2^31423404325 is an apocalyptic number.

It is an amenable number.

31423404325 is a deficient number, since it is larger than the sum of its proper divisors (7556074043).

31423404325 is a wasteful number, since it uses less digits than its factorization.

31423404325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466364 (or 466359 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 31423404325 its reverse (52340432413), we get a palindrome (83763836738).

The spelling of 31423404325 in words is "thirty-one billion, four hundred twenty-three million, four hundred four thousand, three hundred twenty-five".