311312110203002 has 4 divisors (see below), whose sum is σ = 466968165304506. Its totient is φ = 155656055101500.

The previous prime is 311312110202987. The next prime is 311312110203013. The reversal of 311312110203002 is 200302011213113.

It is a happy number.

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., 291958084941961 + 19354025261041 = 17086781^2 + 4399321^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77828027550749 + ... + 77828027550752.

Almost surely, 2^{311312110203002} is an apocalyptic number.

311312110203002 is a deficient number, since it is larger than the sum of its proper divisors (155656055101504).

311312110203002 is a wasteful number, since it uses less digits than its factorization.

311312110203002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155656055101503.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311312110203002 its reverse (200302011213113), we get a palindrome (511614121416115).

The spelling of 311312110203002 in words is "three hundred eleven trillion, three hundred twelve billion, one hundred ten million, two hundred three thousand, two".