312032221332 has 96 divisors (see below), whose sum is σ = 788218704000. Its totient is φ = 95504596992.

The previous prime is 312032221321. The next prime is 312032221387. The reversal of 312032221332 is 233122230213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23598219 + ... + 23611437.

It is an arithmetic number, because the mean of its divisors is an integer number (8210611500).

Almost surely, 2^312032221332 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 312032221332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394109352000).

312032221332 is an abundant number, since it is smaller than the sum of its proper divisors (476186482668).

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

312032221332 is a wasteful number, since it uses less digits than its factorization.

312032221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14025 (or 14023 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 312032221332 its reverse (233122230213), we get a palindrome (545154451545).

The spelling of 312032221332 in words is "three hundred twelve billion, thirty-two million, two hundred twenty-one thousand, three hundred thirty-two".