1331132537 has 8 divisors (see below), whose sum is σ = 1535512896. Its totient is φ = 1130306832.

The previous prime is 1331132501. The next prime is 1331132629. The reversal of 1331132537 is 7352311331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331132537 - 2³⁰ = 257390713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331132137) 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, 887858 + ... + 889355.

It is an arithmetic number, because the mean of its divisors is an integer number (191939112).

Almost surely, 2^1331132537 is an apocalyptic number.

It is an amenable number.

1331132537 is a deficient number, since it is larger than the sum of its proper divisors (204380359).

1331132537 is a wasteful number, since it uses less digits than its factorization.

1331132537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777327.

The product of its digits is 5670, while the sum is 29.

The square root of 1331132537 is about 36484.6890763783. The cubic root of 1331132537 is about 1100.0365103584.

Adding to 1331132537 its reverse (7352311331), we get a palindrome (8683443868).

The spelling of 1331132537 in words is "one billion, three hundred thirty-one million, one hundred thirty-two thousand, five hundred thirty-seven".