312132020321 has 8 divisors (see below), whose sum is σ = 340531466304. Its totient is φ = 283736542320.

The previous prime is 312132020287. The next prime is 312132020329. The reversal of 312132020321 is 123020231213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-312132020321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312132020293 and 312132020302.

It is not an unprimeable number, because it can be changed into a prime (312132020329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826310 + ... + 1143263.

It is an arithmetic number, because the mean of its divisors is an integer number (42566433288).

Almost surely, 2^312132020321 is an apocalyptic number.

It is an amenable number.

312132020321 is a deficient number, since it is larger than the sum of its proper divisors (28399445983).

312132020321 is a wasteful number, since it uses less digits than its factorization.

312132020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983991.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312132020321 its reverse (123020231213), we get a palindrome (435152251534).

The spelling of 312132020321 in words is "three hundred twelve billion, one hundred thirty-two million, twenty thousand, three hundred twenty-one".