31113303032 has 144 divisors (see below), whose sum is σ = 72513056160. Its totient is φ = 12476104704.

The previous prime is 31113302971. The next prime is 31113303079. The reversal of 31113303032 is 23030331113.

It is a super-2 number, since 2×31113303032² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31113302995 and 31113303013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21863873 + ... + 21865295.

It is an arithmetic number, because the mean of its divisors is an integer number (503562890).

Almost surely, 2^31113303032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31113303032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36256528080).

31113303032 is an abundant number, since it is smaller than the sum of its proper divisors (41399753128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31113303032 is a wasteful number, since it uses less digits than its factorization.

31113303032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31113303032 its reverse (23030331113), we get a palindrome (54143634145).

The spelling of 31113303032 in words is "thirty-one billion, one hundred thirteen million, three hundred three thousand, thirty-two".