1331285197 has 24 divisors (see below), whose sum is σ = 1517979008. Its totient is φ = 1165713120.

The previous prime is 1331285191. The next prime is 1331285201. The reversal of 1331285197 is 7915821331.

It is not a de Polignac number, because 1331285197 - 2⁷ = 1331285069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331285191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459688 + ... + 462574.

Almost surely, 2^1331285197 is an apocalyptic number.

It is an amenable number.

1331285197 is a deficient number, since it is larger than the sum of its proper divisors (186693811).

1331285197 is a wasteful number, since it uses less digits than its factorization.

1331285197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049 (or 3038 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 1331285197 is about 36486.7811268684. The cubic root of 1331285197 is about 1100.0785610558.

The spelling of 1331285197 in words is "one billion, three hundred thirty-one million, two hundred eighty-five thousand, one hundred ninety-seven".