31003441040 has 160 divisors (see below), whose sum is σ = 84932064000. Its totient is φ = 10376386560.

The previous prime is 31003441039. The next prime is 31003441057. The reversal of 31003441040 is 4014430013.

It is a happy number.

It is a super-2 number, since 2×31003441040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 4103186 + ... + 4110734.

It is an arithmetic number, because the mean of its divisors is an integer number (530825400).

Almost surely, 2^31003441040 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 31003441040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42466032000).

31003441040 is an abundant number, since it is smaller than the sum of its proper divisors (53928622960).

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

31003441040 is a wasteful number, since it uses less digits than its factorization.

31003441040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945 (or 7939 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31003441040 its reverse (4014430013), we get a palindrome (35017871053).

The spelling of 31003441040 in words is "thirty-one billion, three million, four hundred forty-one thousand, forty".