1331247148 has 48 divisors (see below), whose sum is σ = 2972116224. Its totient is φ = 506600640.

The previous prime is 1331247133. The next prime is 1331247263. The reversal of 1331247148 is 8417421331.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37015 + ... + 63502.

It is an arithmetic number, because the mean of its divisors is an integer number (61919088).

Almost surely, 2^1331247148 is an apocalyptic number.

It is an amenable number.

1331247148 is an abundant number, since it is smaller than the sum of its proper divisors (1640869076).

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

1331247148 is a wasteful number, since it uses less digits than its factorization.

1331247148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100582 (or 100580 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 1331247148 is about 36486.2597151311. The cubic root of 1331247148 is about 1100.0680806348.

Adding to 1331247148 its reverse (8417421331), we get a palindrome (9748668479).

The spelling of 1331247148 in words is "one billion, three hundred thirty-one million, two hundred forty-seven thousand, one hundred forty-eight".