31522425010040 has 128 divisors (see below), whose sum is σ = 73561131072000. Its totient is φ = 12142674700800.

The previous prime is 31522425010007. The next prime is 31522425010081. The reversal of 31522425010040 is 4001052422513.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 31522425009985 and 31522425010012.

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, 2083293275 + ... + 2083308405.

It is an arithmetic number, because the mean of its divisors is an integer number (574696336500).

Almost surely, 2^{31522425010040} 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 31522425010040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36780565536000).

31522425010040 is an abundant number, since it is smaller than the sum of its proper divisors (42038706061960).

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

31522425010040 is a wasteful number, since it uses less digits than its factorization.

31522425010040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19701 (or 19697 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 31522425010040 its reverse (4001052422513), we get a palindrome (35523477432553).

The spelling of 31522425010040 in words is "thirty-one trillion, five hundred twenty-two billion, four hundred twenty-five million, ten thousand, forty".