1223013233131 has 4 divisors (see below), whose sum is σ = 1276187721552. Its totient is φ = 1169838744712.

The previous prime is 1223013233129. The next prime is 1223013233179. The reversal of 1223013233131 is 1313323103221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223013233131 - 2¹ = 1223013233129 is a prime.

It is a super-2 number, since 2×1223013233131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223013233096 and 1223013233105.

It is not an unprimeable number, because it can be changed into a prime (1223013233731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26587244176 + ... + 26587244221.

It is an arithmetic number, because the mean of its divisors is an integer number (319046930388).

Almost surely, 2^{1223013233131} is an apocalyptic number.

1223013233131 is a deficient number, since it is larger than the sum of its proper divisors (53174488421).

1223013233131 is an equidigital number, since it uses as much as digits as its factorization.

1223013233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53174488420.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1223013233131 its reverse (1313323103221), we get a palindrome (2536336336352).

The spelling of 1223013233131 in words is "one trillion, two hundred twenty-three billion, thirteen million, two hundred thirty-three thousand, one hundred thirty-one".