313132121000 has 32 divisors (see below), whose sum is σ = 732729165480. Its totient is φ = 125252848000.

The previous prime is 313132120979. The next prime is 313132121011. The reversal of 313132121000 is 121231313.

It can be written as a sum of positive squares in 4 ways, for example, as 38918609284 + 274213511716 = 197278^2 + 523654^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 313132121000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156565061 + ... + 156567060.

Almost surely, 2^313132121000 is an apocalyptic number.

It is an amenable number.

313132121000 is an abundant number, since it is smaller than the sum of its proper divisors (419597044480).

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

313132121000 is a wasteful number, since it uses less digits than its factorization.

313132121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313132142 (or 313132128 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 313132121000 its reverse (121231313), we get a palindrome (313253352313).

The spelling of 313132121000 in words is "three hundred thirteen billion, one hundred thirty-two million, one hundred twenty-one thousand".