31020133040 has 160 divisors (see below), whose sum is σ = 80507347200. Its totient is φ = 11036712960.

The previous prime is 31020133033. The next prime is 31020133129. The reversal of 31020133040 is 4033102013.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27475196 + ... + 27476324.

It is an arithmetic number, because the mean of its divisors is an integer number (503170920).

Almost surely, 2^31020133040 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 31020133040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40253673600).

31020133040 is an abundant number, since it is smaller than the sum of its proper divisors (49487214160).

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

31020133040 is a wasteful number, since it uses less digits than its factorization.

31020133040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31020133040 its reverse (4033102013), we get a palindrome (35053235053).

The spelling of 31020133040 in words is "thirty-one billion, twenty million, one hundred thirty-three thousand, forty".