31411130240 has 256 divisors, whose sum is σ = 88151500800. Its totient is φ = 10479697920.

The previous prime is 31411130237. The next prime is 31411130273. The reversal of 31411130240 is 4203111413.

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

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, 50744651 + ... + 50745269.

It is an arithmetic number, because the mean of its divisors is an integer number (344341800).

Almost surely, 2^31411130240 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 31411130240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44075750400).

31411130240 is an abundant number, since it is smaller than the sum of its proper divisors (56740370560).

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

31411130240 is a wasteful number, since it uses less digits than its factorization.

31411130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31411130240 its reverse (4203111413), we get a palindrome (35614241653).

The spelling of 31411130240 in words is "thirty-one billion, four hundred eleven million, one hundred thirty thousand, two hundred forty".