1311421603236 has 48 divisors (see below), whose sum is σ = 3227363966400. Its totient is φ = 413319480192.

The previous prime is 1311421603229. The next prime is 1311421603243. The reversal of 1311421603236 is 6323061241131.

It is an interprime number because it is at equal distance from previous prime (1311421603229) and next prime (1311421603243).

It is a junction number, because it is equal to n+sod(n) for n = 1311421603197 and 1311421603206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5534095 + ... + 5766198.

It is an arithmetic number, because the mean of its divisors is an integer number (67236749300).

Almost surely, 2^{1311421603236} is an apocalyptic number.

It is an amenable number.

1311421603236 is an abundant number, since it is smaller than the sum of its proper divisors (1915942363164).

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

1311421603236 is a wasteful number, since it uses less digits than its factorization.

1311421603236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11300828 (or 11300826 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

Adding to 1311421603236 its reverse (6323061241131), we get a palindrome (7634482844367).

The spelling of 1311421603236 in words is "one trillion, three hundred eleven billion, four hundred twenty-one million, six hundred three thousand, two hundred thirty-six".