1331223773 has 8 divisors (see below), whose sum is σ = 1453386240. Its totient is φ = 1209251680.

The previous prime is 1331223767. The next prime is 1331223787. The reversal of 1331223773 is 3773221331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331223773 - 2¹² = 1331219677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331223373) by changing a digit.

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, 32765 + ... + 61122.

It is an arithmetic number, because the mean of its divisors is an integer number (181673280).

Almost surely, 2^1331223773 is an apocalyptic number.

It is an amenable number.

1331223773 is a deficient number, since it is larger than the sum of its proper divisors (122162467).

1331223773 is a wasteful number, since it uses less digits than its factorization.

1331223773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95187.

The product of its digits is 15876, while the sum is 32.

The square root of 1331223773 is about 36485.9393876600. The cubic root of 1331223773 is about 1100.0616420002.

The spelling of 1331223773 in words is "one billion, three hundred thirty-one million, two hundred twenty-three thousand, seven hundred seventy-three".