31421310133244 has 24 divisors (see below), whose sum is σ = 56367054214800. Its totient is φ = 15316962779520.

The previous prime is 31421310133217. The next prime is 31421310133307. The reversal of 31421310133244 is 44233101312413.

It is a self number, because there is not a number n which added to its sum of digits gives 31421310133244.

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, 65419859 + ... + 65898410.

It is an arithmetic number, because the mean of its divisors is an integer number (2348627258950).

Almost surely, 2^{31421310133244} is an apocalyptic number.

It is an amenable number.

31421310133244 is a deficient number, since it is larger than the sum of its proper divisors (24945744081556).

31421310133244 is a wasteful number, since it uses less digits than its factorization.

31421310133244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131319773 (or 131319771 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 31421310133244 its reverse (44233101312413), we get a palindrome (75654411445657).

The spelling of 31421310133244 in words is "thirty-one trillion, four hundred twenty-one billion, three hundred ten million, one hundred thirty-three thousand, two hundred forty-four".