311123121002 has 8 divisors (see below), whose sum is σ = 466688578212. Its totient is φ = 155560261600.

The previous prime is 311123120993. The next prime is 311123121061. The reversal of 311123121002 is 200121321113.

It can be written as a sum of positive squares in 2 ways, for example, as 305067324241 + 6055796761 = 552329^2 + 77819^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315749 + ... + 849672.

Almost surely, 2^311123121002 is an apocalyptic number.

311123121002 is a deficient number, since it is larger than the sum of its proper divisors (155565457210).

311123121002 is a wasteful number, since it uses less digits than its factorization.

311123121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298904.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 311123121002 its reverse (200121321113), we get a palindrome (511244442115).

The spelling of 311123121002 in words is "three hundred eleven billion, one hundred twenty-three million, one hundred twenty-one thousand, two".