1331252531205 has 64 divisors (see below), whose sum is σ = 2342819082240. Its totient is φ = 642500660736.

The previous prime is 1331252531173. The next prime is 1331252531351. The reversal of 1331252531205 is 5021352521331.

It is not a de Polignac number, because 1331252531205 - 2⁵ = 1331252531173 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4625809 + ... + 4905161.

It is an arithmetic number, because the mean of its divisors is an integer number (36606548160).

Almost surely, 2^{1331252531205} is an apocalyptic number.

1331252531205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1331252531205 is a deficient number, since it is larger than the sum of its proper divisors (1011566551035).

1331252531205 is a wasteful number, since it uses less digits than its factorization.

1331252531205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280130.

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 1331252531205 in words is "one trillion, three hundred thirty-one billion, two hundred fifty-two million, five hundred thirty-one thousand, two hundred five".