1223312323131 has 12 divisors (see below), whose sum is σ = 1767326812680. Its totient is φ = 815393799360.

The previous prime is 1223312323087. The next prime is 1223312323141. The reversal of 1223312323131 is 1313232133221.

1223312323131 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 312 + 32 + 313 + 1 = 666.

It is not a de Polignac number, because 1223312323131 - 2⁷ = 1223312323003 is a prime.

It is a super-2 number, since 2×1223312323131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223312323095 and 1223312323104.

It is not an unprimeable number, because it can be changed into a prime (1223312323141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12260001 + ... + 12359378.

It is an arithmetic number, because the mean of its divisors is an integer number (147277234390).

Almost surely, 2^{1223312323131} is an apocalyptic number.

1223312323131 is a deficient number, since it is larger than the sum of its proper divisors (544014489549).

1223312323131 is a wasteful number, since it uses less digits than its factorization.

1223312323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24624906 (or 24624903 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1223312323131 its reverse (1313232133221), we get a palindrome (2536544456352).

The spelling of 1223312323131 in words is "one trillion, two hundred twenty-three billion, three hundred twelve million, three hundred twenty-three thousand, one hundred thirty-one".