31212122330002 has 4 divisors (see below), whose sum is σ = 46818183495006. Its totient is φ = 15606061165000.

The previous prime is 31212122329987. The next prime is 31212122330021. The reversal of 31212122330002 is 20003322121213.

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., 23232293960121 + 7979828369881 = 4819989^2 + 2824859^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7803030582499 + ... + 7803030582502.

Almost surely, 2^{31212122330002} is an apocalyptic number.

31212122330002 is a deficient number, since it is larger than the sum of its proper divisors (15606061165004).

31212122330002 is a wasteful number, since it uses less digits than its factorization.

31212122330002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15606061165003.

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

Adding to 31212122330002 its reverse (20003322121213), we get a palindrome (51215444451215).

The spelling of 31212122330002 in words is "thirty-one trillion, two hundred twelve billion, one hundred twenty-two million, three hundred thirty thousand, two".