1331334136 has 64 divisors (see below), whose sum is σ = 2797027200. Its totient is φ = 588931200.

The previous prime is 1331334133. The next prime is 1331334143. The reversal of 1331334136 is 6314331331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331334133) 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, 609895 + ... + 612073.

It is an arithmetic number, because the mean of its divisors is an integer number (43703550).

Almost surely, 2^1331334136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331334136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1398513600).

1331334136 is an abundant number, since it is smaller than the sum of its proper divisors (1465693064).

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

1331334136 is a wasteful number, since it uses less digits than its factorization.

1331334136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 2376 counting only the distinct ones).

The product of its digits is 5832, while the sum is 28.

The square root of 1331334136 is about 36487.4517608451. The cubic root of 1331334136 is about 1100.0920407833.

Adding to 1331334136 its reverse (6314331331), we get a palindrome (7645665467).

The spelling of 1331334136 in words is "one billion, three hundred thirty-one million, three hundred thirty-four thousand, one hundred thirty-six".