1331223774 has 16 divisors (see below), whose sum is σ = 2672062608. Its totient is φ = 442138752.

The previous prime is 1331223767. The next prime is 1331223787. The reversal of 1331223774 is 4773221331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398827 + ... + 402150.

It is an arithmetic number, because the mean of its divisors is an integer number (167003913).

Almost surely, 2^1331223774 is an apocalyptic number.

1331223774 is an abundant number, since it is smaller than the sum of its proper divisors (1340838834).

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

1331223774 is a wasteful number, since it uses less digits than its factorization.

1331223774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801259.

The product of its digits is 21168, while the sum is 33.

The square root of 1331223774 is about 36485.9394013639. The cubic root of 1331223774 is about 1100.0616422756.

The spelling of 1331223774 in words is "one billion, three hundred thirty-one million, two hundred twenty-three thousand, seven hundred seventy-four".