312331002221002 has 4 divisors (see below), whose sum is σ = 468496503331506. Its totient is φ = 156165501110500.

The previous prime is 312331002220943. The next prime is 312331002221011. The reversal of 312331002221002 is 200122200133213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 181345517998681 + 130985484222321 = 13466459^2 + 11444889^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78082750555249 + ... + 78082750555252.

Almost surely, 2^{312331002221002} is an apocalyptic number.

312331002221002 is a deficient number, since it is larger than the sum of its proper divisors (156165501110504).

312331002221002 is a wasteful number, since it uses less digits than its factorization.

312331002221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156165501110503.

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

Adding to 312331002221002 its reverse (200122200133213), we get a palindrome (512453202354215).

The spelling of 312331002221002 in words is "three hundred twelve trillion, three hundred thirty-one billion, two million, two hundred twenty-one thousand, two".