312232132021 has 2 divisors, whose sum is σ = 312232132022. Its totient is φ = 312232132020.

The previous prime is 312232132013. The next prime is 312232132031. The reversal of 312232132021 is 120231232213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304643283025 + 7588848996 = 551945^2 + 87114^2 .

It is a cyclic number.

It is not a de Polignac number, because 312232132021 - 2³ = 312232132013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312232131983 and 312232132001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312232132031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156116066010 + 156116066011.

It is an arithmetic number, because the mean of its divisors is an integer number (156116066011).

Almost surely, 2^312232132021 is an apocalyptic number.

It is an amenable number.

312232132021 is a deficient number, since it is larger than the sum of its proper divisors (1).

312232132021 is an equidigital number, since it uses as much as digits as its factorization.

312232132021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312232132021 its reverse (120231232213), we get a palindrome (432463364234).

The spelling of 312232132021 in words is "three hundred twelve billion, two hundred thirty-two million, one hundred thirty-two thousand, twenty-one".