31352130320 has 120 divisors (see below), whose sum is σ = 88496222784. Its totient is φ = 10116937728.

The previous prime is 31352130283. The next prime is 31352130331. The reversal of 31352130320 is 2303125313.

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, 64979 + ... + 258701.

Almost surely, 2^31352130320 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 31352130320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44248111392).

31352130320 is an abundant number, since it is smaller than the sum of its proper divisors (57144092464).

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

31352130320 is a wasteful number, since it uses less digits than its factorization.

31352130320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193777 (or 193754 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

Adding to 31352130320 its reverse (2303125313), we get a palindrome (33655255633).

The spelling of 31352130320 in words is "thirty-one billion, three hundred fifty-two million, one hundred thirty thousand, three hundred twenty".