31373220046 has 16 divisors (see below), whose sum is σ = 55637238240. Its totient is φ = 12982021920.

The previous prime is 31373220013. The next prime is 31373220077. The reversal of 31373220046 is 64002237313.

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, 38636565 + ... + 38637376.

It is an arithmetic number, because the mean of its divisors is an integer number (3477327390).

Almost surely, 2^31373220046 is an apocalyptic number.

31373220046 is a deficient number, since it is larger than the sum of its proper divisors (24264018194).

31373220046 is a wasteful number, since it uses less digits than its factorization.

31373220046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77273979.

The product of its (nonzero) digits is 18144, while the sum is 31.

Adding to 31373220046 its reverse (64002237313), we get a palindrome (95375457359).

The spelling of 31373220046 in words is "thirty-one billion, three hundred seventy-three million, two hundred twenty thousand, forty-six".