311223302202123 has 16 divisors (see below), whose sum is σ = 461116528657440. Its totient is φ = 207461965040352.

The previous prime is 311223302202107. The next prime is 311223302202133. The reversal of 311223302202123 is 321202203322113.

311223302202123 is a `hidden beast` number, since 3 + 1 + 1 + 2 + 2 + 330 + 2 + 202 + 123 = 666.

It is not a de Polignac number, because 311223302202123 - 2⁴ = 311223302202107 is a prime.

It is a super-2 number, since 2×311223302202123² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (311223302202133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561841036 + ... + 562394697.

It is an arithmetic number, because the mean of its divisors is an integer number (28819783041090).

Almost surely, 2^{311223302202123} is an apocalyptic number.

311223302202123 is a deficient number, since it is larger than the sum of its proper divisors (149893226455317).

311223302202123 is a wasteful number, since it uses less digits than its factorization.

311223302202123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124245995 (or 1124245989 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 311223302202123 its reverse (321202203322113), we get a palindrome (632425505524236).

The spelling of 311223302202123 in words is "three hundred eleven trillion, two hundred twenty-three billion, three hundred two million, two hundred two thousand, one hundred twenty-three".