31280445002 has 16 divisors (see below), whose sum is σ = 46982460672. Its totient is φ = 15619641600.

The previous prime is 31280444983. The next prime is 31280445011. The reversal of 31280445002 is 20054408213.

It is a happy 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, 6513002 + ... + 6517802.

It is an arithmetic number, because the mean of its divisors is an integer number (2936403792).

Almost surely, 2^31280445002 is an apocalyptic number.

31280445002 is a deficient number, since it is larger than the sum of its proper divisors (15702015670).

31280445002 is a wasteful number, since it uses less digits than its factorization.

31280445002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8413.

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 31280445002 in words is "thirty-one billion, two hundred eighty million, four hundred forty-five thousand, two".