1331105501 has 4 divisors (see below), whose sum is σ = 1452115104. Its totient is φ = 1210095900.

The previous prime is 1331105453. The next prime is 1331105569. The reversal of 1331105501 is 1055011331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1331105501 - 2⁶ = 1331105437 is a prime.

It is a super-2 number, since 2×1331105501² = 3543683709584922002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331105201) 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 3 ways as a sum of consecutive naturals, for example, 60504785 + ... + 60504806.

It is an arithmetic number, because the mean of its divisors is an integer number (363028776).

Almost surely, 2^1331105501 is an apocalyptic number.

1331105501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1331105501 is a deficient number, since it is larger than the sum of its proper divisors (121009603).

1331105501 is a wasteful number, since it uses less digits than its factorization.

1331105501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121009602.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 1331105501 is about 36484.3185629114. The cubic root of 1331105501 is about 1100.0290628685.

Adding to 1331105501 its reverse (1055011331), we get a palindrome (2386116832).

The spelling of 1331105501 in words is "one billion, three hundred thirty-one million, one hundred five thousand, five hundred one".