1311423434420 has 48 divisors (see below), whose sum is σ = 3010624243200. Its totient is φ = 475885633920.

The previous prime is 1311423434417. The next prime is 1311423434429. The reversal of 1311423434420 is 244343241131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311423434429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6116975 + ... + 6327734.

It is an arithmetic number, because the mean of its divisors is an integer number (62721338400).

Almost surely, 2^{1311423434420} is an apocalyptic number.

1311423434420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311423434420 is an abundant number, since it is smaller than the sum of its proper divisors (1699200808780).

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

1311423434420 is a wasteful number, since it uses less digits than its factorization.

1311423434420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12445208 (or 12445206 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 1311423434420 its reverse (244343241131), we get a palindrome (1555766675551).

The spelling of 1311423434420 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, four hundred thirty-four thousand, four hundred twenty".