1331132477 has 2 divisors, whose sum is σ = 1331132478. Its totient is φ = 1331132476.

The previous prime is 1331132441. The next prime is 1331132479. The reversal of 1331132477 is 7742311331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1193633401 + 137499076 = 34549^2 + 11726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331132477 - 2¹⁰ = 1331131453 is a prime.

Together with 1331132479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331132479) 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 as a sum of consecutive naturals, namely, 665566238 + 665566239.

It is an arithmetic number, because the mean of its divisors is an integer number (665566239).

Almost surely, 2^1331132477 is an apocalyptic number.

It is an amenable number.

1331132477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331132477 is an equidigital number, since it uses as much as digits as its factorization.

1331132477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 32.

The square root of 1331132477 is about 36484.6882541156. The cubic root of 1331132477 is about 1100.0364938306.

The spelling of 1331132477 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, four hundred seventy-seven".