1223351302131 has 12 divisors (see below), whose sum is σ = 2019500562352. Its totient is φ = 699057886896.

The previous prime is 1223351302091. The next prime is 1223351302157. The reversal of 1223351302131 is 1312031533221.

1223351302131 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 351 + 302 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 1223351302131 - 2¹⁹ = 1223350777843 is a prime.

It is a super-2 number, since 2×1223351302131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223351302095 and 1223351302104.

It is not an unprimeable number, because it can be changed into a prime (1223351302631) 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, 9709137256 + ... + 9709137381.

Almost surely, 2^{1223351302131} is an apocalyptic number.

1223351302131 is a deficient number, since it is larger than the sum of its proper divisors (796149260221).

1223351302131 is a wasteful number, since it uses less digits than its factorization.

1223351302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19418274650 (or 19418274647 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 1223351302131 its reverse (1312031533221), we get a palindrome (2535382835352).

The spelling of 1223351302131 in words is "one trillion, two hundred twenty-three billion, three hundred fifty-one million, three hundred two thousand, one hundred thirty-one".