311312021102 has 16 divisors (see below), whose sum is σ = 471019646592. Its totient is φ = 154307931960.

The previous prime is 311312021089. The next prime is 311312021131. The reversal of 311312021102 is 201120213113.

It is a super-2 number, since 2×311312021102² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361028 + ... + 867735.

It is an arithmetic number, because the mean of its divisors is an integer number (29438727912).

Almost surely, 2^311312021102 is an apocalyptic number.

311312021102 is a deficient number, since it is larger than the sum of its proper divisors (159707625490).

311312021102 is a wasteful number, since it uses less digits than its factorization.

311312021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229863.

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

Adding to 311312021102 its reverse (201120213113), we get a palindrome (512432234215).

The spelling of 311312021102 in words is "three hundred eleven billion, three hundred twelve million, twenty-one thousand, one hundred two".