1331331093 has 8 divisors (see below), whose sum is σ = 1972342400. Its totient is φ = 887554044.

The previous prime is 1331331091. The next prime is 1331331107. The reversal of 1331331093 is 3901331331.

It is a happy number.

It is not a de Polignac number, because 1331331093 - 2¹ = 1331331091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 49308559 = 1331331093 / (1 + 3 + 3 + 1 + 3 + 3 + 1 + 0 + 9 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331331091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24654253 + ... + 24654306.

It is an arithmetic number, because the mean of its divisors is an integer number (246542800).

Almost surely, 2^1331331093 is an apocalyptic number.

It is an amenable number.

1331331093 is a deficient number, since it is larger than the sum of its proper divisors (641011307).

1331331093 is an equidigital number, since it uses as much as digits as its factorization.

1331331093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49308568 (or 49308562 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 27.

The square root of 1331331093 is about 36487.4100615541. The cubic root of 1331331093 is about 1100.0912026309.

The spelling of 1331331093 in words is "one billion, three hundred thirty-one million, three hundred thirty-one thousand, ninety-three".