31452647328 has 120 divisors (see below), whose sum is σ = 94247082468. Its totient is φ = 10286355456.

The previous prime is 31452647297. The next prime is 31452647333. The reversal of 31452647328 is 82374625413.

31452647328 is a `hidden beast` number, since 31 + 4 + 526 + 4 + 73 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30522885264 + 929762064 = 174708^2 + 30492^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22900 + ... + 251852.

Almost surely, 2^31452647328 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 31452647328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47123541234).

31452647328 is an abundant number, since it is smaller than the sum of its proper divisors (62794435140).

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

31452647328 is a wasteful number, since it uses less digits than its factorization.

31452647328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229028 (or 229011 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The spelling of 31452647328 in words is "thirty-one billion, four hundred fifty-two million, six hundred forty-seven thousand, three hundred twenty-eight".