1331150205 has 64 divisors (see below), whose sum is σ = 2681911296. Its totient is φ = 547680000.

The previous prime is 1331150179. The next prime is 1331150251. The reversal of 1331150205 is 5020511331.

It is not a de Polignac number, because 1331150205 - 2⁷ = 1331150077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110950 + ... + 122360.

It is an arithmetic number, because the mean of its divisors is an integer number (41904864).

Almost surely, 2^1331150205 is an apocalyptic number.

1331150205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1331150205 is an abundant number, since it is smaller than the sum of its proper divisors (1350761091).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331150205 is a wasteful number, since it uses less digits than its factorization.

1331150205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11538.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1331150205 is about 36484.9312045398. The cubic root of 1331150205 is about 1100.0413772314.

Adding to 1331150205 its reverse (5020511331), we get a palindrome (6351661536).

The spelling of 1331150205 in words is "one billion, three hundred thirty-one million, one hundred fifty thousand, two hundred five".