31051471206 has 24 divisors (see below), whose sum is σ = 72242199000. Its totient is φ = 8871848832.

The previous prime is 31051471177. The next prime is 31051471289. The reversal of 31051471206 is 60217415013.

It is a congruent number.

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, 52808331 + ... + 52808918.

It is an arithmetic number, because the mean of its divisors is an integer number (3010091625).

Almost surely, 2^31051471206 is an apocalyptic number.

31051471206 is an abundant number, since it is smaller than the sum of its proper divisors (41190727794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31051471206 is a wasteful number, since it uses less digits than its factorization.

31051471206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105617268 (or 105617261 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

Adding to 31051471206 its reverse (60217415013), we get a palindrome (91268886219).

The spelling of 31051471206 in words is "thirty-one billion, fifty-one million, four hundred seventy-one thousand, two hundred six".