1303311123131 has 4 divisors (see below), whose sum is σ = 1303342499592. Its totient is φ = 1303279746672.

The previous prime is 1303311123119. The next prime is 1303311123139. The reversal of 1303311123131 is 1313211133031.

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 1303311123131 - 2³⁴ = 1286131253947 is a prime.

It is a super-2 number, since 2×1303311123131² (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 = 1303311123097 and 1303311123106.

It is not an unprimeable number, because it can be changed into a prime (1303311123139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15625841 + ... + 15709026.

It is an arithmetic number, because the mean of its divisors is an integer number (325835624898).

Almost surely, 2^{1303311123131} is an apocalyptic number.

1303311123131 is a deficient number, since it is larger than the sum of its proper divisors (31376461).

1303311123131 is an equidigital number, since it uses as much as digits as its factorization.

1303311123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31376460.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1303311123131 its reverse (1313211133031), we get a palindrome (2616522256162).

The spelling of 1303311123131 in words is "one trillion, three hundred three billion, three hundred eleven million, one hundred twenty-three thousand, one hundred thirty-one".