1302131311123 has 4 divisors (see below), whose sum is σ = 1302134066128. Its totient is φ = 1302128556120.

The previous prime is 1302131311037. The next prime is 1302131311139. The reversal of 1302131311123 is 3211131312031.

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 1302131311123 - 2⁹ = 1302131310611 is a prime.

It is a super-2 number, since 2×1302131311123² (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 = 1302131311094 and 1302131311103.

It is not an unprimeable number, because it can be changed into a prime (1302131111123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468663 + ... + 1680448.

It is an arithmetic number, because the mean of its divisors is an integer number (325533516532).

Almost surely, 2^{1302131311123} is an apocalyptic number.

1302131311123 is a deficient number, since it is larger than the sum of its proper divisors (2755005).

1302131311123 is an equidigital number, since it uses as much as digits as its factorization.

1302131311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755004.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1302131311123 its reverse (3211131312031), we get a palindrome (4513262623154).

The spelling of 1302131311123 in words is "one trillion, three hundred two billion, one hundred thirty-one million, three hundred eleven thousand, one hundred twenty-three".