31952923488 has 144 divisors (see below), whose sum is σ = 91468593216. Its totient is φ = 10580647680.

The previous prime is 31952923459. The next prime is 31952923507. The reversal of 31952923488 is 88432925913.

31952923488 is a `hidden beast` number, since 3 + 1 + 9 + 5 + 292 + 348 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×31952923488² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46241223 + ... + 46241913.

It is an arithmetic number, because the mean of its divisors is an integer number (635198564).

Almost surely, 2^31952923488 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 31952923488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45734296608).

31952923488 is an abundant number, since it is smaller than the sum of its proper divisors (59515669728).

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

31952923488 is a wasteful number, since it uses less digits than its factorization.

31952923488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537 (or 1526 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 31952923488 in words is "thirty-one billion, nine hundred fifty-two million, nine hundred twenty-three thousand, four hundred eighty-eight".