32130321312 has 96 divisors (see below), whose sum is σ = 86084812800. Its totient is φ = 10490957568.

The previous prime is 32130321259. The next prime is 32130321323. The reversal of 32130321312 is 21312303123.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×32130321312² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 946489 + ... + 979847.

It is an arithmetic number, because the mean of its divisors is an integer number (896716800).

Almost surely, 2^32130321312 is an apocalyptic number.

32130321312 is a gapful number since it is divisible by the number (32) 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 32130321312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43042406400).

32130321312 is an abundant number, since it is smaller than the sum of its proper divisors (53954491488).

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

32130321312 is a wasteful number, since it uses less digits than its factorization.

32130321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33578 (or 33570 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 32130321312 its reverse (21312303123), we get a palindrome (53442624435).

The spelling of 32130321312 in words is "thirty-two billion, one hundred thirty million, three hundred twenty-one thousand, three hundred twelve".