1331342144 has 28 divisors (see below), whose sum is σ = 2882054688. Its totient is φ = 605155200.

The previous prime is 1331342137. The next prime is 1331342153. The reversal of 1331342144 is 4412431331.

It is a happy number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944852 + ... + 946259.

Almost surely, 2^1331342144 is an apocalyptic number.

It is an amenable number.

1331342144 is an abundant number, since it is smaller than the sum of its proper divisors (1550712544).

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

1331342144 is a wasteful number, since it uses less digits than its factorization.

1331342144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891134 (or 1891124 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 1331342144 is about 36487.5614970362. The cubic root of 1331342144 is about 1100.0942464703.

Adding to 1331342144 its reverse (4412431331), we get a palindrome (5743773475).

The spelling of 1331342144 in words is "one billion, three hundred thirty-one million, three hundred forty-two thousand, one hundred forty-four".