31305320486 has 32 divisors (see below), whose sum is σ = 51832535040. Its totient is φ = 14061643200.

The previous prime is 31305320471. The next prime is 31305320509. The reversal of 31305320486 is 68402350313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4474451 + ... + 4481441.

It is an arithmetic number, because the mean of its divisors is an integer number (1619766720).

Almost surely, 2^31305320486 is an apocalyptic number.

31305320486 is a deficient number, since it is larger than the sum of its proper divisors (20527214554).

31305320486 is a wasteful number, since it uses less digits than its factorization.

31305320486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9380.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 31305320486 its reverse (68402350313), we get a palindrome (99707670799).

The spelling of 31305320486 in words is "thirty-one billion, three hundred five million, three hundred twenty thousand, four hundred eighty-six".