1311226115420 has 96 divisors (see below), whose sum is σ = 3051747631296. Its totient is φ = 470098944000.

The previous prime is 1311226115417. The next prime is 1311226115431. The reversal of 1311226115420 is 245116221131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4584620 + ... + 4862220.

It is an arithmetic number, because the mean of its divisors is an integer number (31789037826).

Almost surely, 2^{1311226115420} is an apocalyptic number.

1311226115420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311226115420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1525873815648).

1311226115420 is an abundant number, since it is smaller than the sum of its proper divisors (1740521515876).

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

1311226115420 is a wasteful number, since it uses less digits than its factorization.

1311226115420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278151 (or 278149 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 1311226115420 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, one hundred fifteen thousand, four hundred twenty".