1105131399 has 8 divisors (see below), whose sum is σ = 1476021120. Its totient is φ = 735497976.

The previous prime is 1105131397. The next prime is 1105131403. The reversal of 1105131399 is 9931315011.

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

It is not a de Polignac number, because 1105131399 - 2¹ = 1105131397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105131397) 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, 312019 + ... + 315540.

It is an arithmetic number, because the mean of its divisors is an integer number (184502640).

Almost surely, 2^1105131399 is an apocalyptic number.

1105131399 is a deficient number, since it is larger than the sum of its proper divisors (370889721).

1105131399 is an equidigital number, since it uses as much as digits as its factorization.

1105131399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628149.

The product of its (nonzero) digits is 3645, while the sum is 33.

The square root of 1105131399 is about 33243.5166461071. The cubic root of 1105131399 is about 1033.8827899096.

The spelling of 1105131399 in words is "one billion, one hundred five million, one hundred thirty-one thousand, three hundred ninety-nine".