31041530040 has 128 divisors (see below), whose sum is σ = 94985856000. Its totient is φ = 8113817088.

The previous prime is 31041529973. The next prime is 31041530053. The reversal of 31041530040 is 4003514013.

It is a junction number, because it is equal to n+sod(n) for n = 31041529989 and 31041530016.

It is a congruent 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, 1305942 + ... + 1329498.

It is an arithmetic number, because the mean of its divisors is an integer number (742077000).

Almost surely, 2^31041530040 is an apocalyptic number.

31041530040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31041530040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47492928000).

31041530040 is an abundant number, since it is smaller than the sum of its proper divisors (63944325960).

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

31041530040 is a wasteful number, since it uses less digits than its factorization.

31041530040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23789 (or 23785 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 31041530040 in words is "thirty-one billion, forty-one million, five hundred thirty thousand, forty".