31305320485 has 8 divisors (see below), whose sum is σ = 37570029696. Its totient is φ = 25041826320.

The previous prime is 31305320471. The next prime is 31305320509. The reversal of 31305320485 is 58402350313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31305320485 - 2¹¹ = 31305318437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31305320485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246081 + ... + 350950.

It is an arithmetic number, because the mean of its divisors is an integer number (4696253712).

Almost surely, 2^31305320485 is an apocalyptic number.

It is an amenable number.

31305320485 is a deficient number, since it is larger than the sum of its proper divisors (6264709211).

31305320485 is a wasteful number, since it uses less digits than its factorization.

31305320485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607523.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 31305320485 its reverse (58402350313), we get a palindrome (89707670798).

The spelling of 31305320485 in words is "thirty-one billion, three hundred five million, three hundred twenty thousand, four hundred eighty-five".