31323441335516 has 72 divisors (see below), whose sum is σ = 62109377987328. Its totient is φ = 13804758589600.

The previous prime is 31323441335453. The next prime is 31323441335519. The reversal of 31323441335516 is 61553314432313.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323441335519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4000430 + ... + 8868501.

It is an arithmetic number, because the mean of its divisors is an integer number (862630249824).

Almost surely, 2^{31323441335516} is an apocalyptic number.

It is an amenable number.

31323441335516 is a deficient number, since it is larger than the sum of its proper divisors (30785936651812).

31323441335516 is a wasteful number, since it uses less digits than its factorization.

31323441335516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12869111 (or 12869098 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 44.

Adding to 31323441335516 its reverse (61553314432313), we get a palindrome (92876755767829).

The spelling of 31323441335516 in words is "thirty-one trillion, three hundred twenty-three billion, four hundred forty-one million, three hundred thirty-five thousand, five hundred sixteen".