31384074646 has 24 divisors (see below), whose sum is σ = 50402071296. Its totient is φ = 14652650880.

The previous prime is 31384074641. The next prime is 31384074653. The reversal of 31384074646 is 64647048313.

It is a junction number, because it is equal to n+sod(n) for n = 31384074596 and 31384074605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31384074641) 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, 140365 + ... + 287176.

It is an arithmetic number, because the mean of its divisors is an integer number (2100086304).

Almost surely, 2^31384074646 is an apocalyptic number.

31384074646 is a deficient number, since it is larger than the sum of its proper divisors (19017996650).

31384074646 is a wasteful number, since it uses less digits than its factorization.

31384074646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427704 (or 427687 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 31384074646 in words is "thirty-one billion, three hundred eighty-four million, seventy-four thousand, six hundred forty-six".