31522452480 has 440 divisors, whose sum is σ = 116898356520. Its totient is φ = 8113029120.

The previous prime is 31522452469. The next prime is 31522452527. The reversal of 31522452480 is 8425422513.

31522452480 is a `hidden beast` number, since 3 + 1 + 52 + 2 + 4 + 524 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7514809344 + 24007643136 = 86688^2 + 154944^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12025570 + ... + 12028190.

It is an arithmetic number, because the mean of its divisors is an integer number (265678083).

Almost surely, 2^31522452480 is an apocalyptic number.

31522452480 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 31522452480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58449178260).

31522452480 is an abundant number, since it is smaller than the sum of its proper divisors (85375904040).

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

31522452480 is a wasteful number, since it uses less digits than its factorization.

31522452480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 31522452480 its reverse (8425422513), we get a palindrome (39947874993).

The spelling of 31522452480 in words is "thirty-one billion, five hundred twenty-two million, four hundred fifty-two thousand, four hundred eighty".