1303123111312 has 40 divisors (see below), whose sum is σ = 2763128282400. Its totient is φ = 590436238080.

The previous prime is 1303123111289. The next prime is 1303123111319. The reversal of 1303123111312 is 2131113213031.

It is a super-2 number, since 2×1303123111312² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1303123111319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11772562 + ... + 11882737.

It is an arithmetic number, because the mean of its divisors is an integer number (69078207060).

Almost surely, 2^{1303123111312} is an apocalyptic number.

It is an amenable number.

1303123111312 is an abundant number, since it is smaller than the sum of its proper divisors (1460005171088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1303123111312 is a wasteful number, since it uses less digits than its factorization.

1303123111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23655631 (or 23655625 counting only the distinct ones).

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

Adding to 1303123111312 its reverse (2131113213031), we get a palindrome (3434236324343).

The spelling of 1303123111312 in words is "one trillion, three hundred three billion, one hundred twenty-three million, one hundred eleven thousand, three hundred twelve".