1331298136 has 32 divisors (see below), whose sum is σ = 2857040640. Its totient is φ = 569704608.

The previous prime is 1331298119. The next prime is 1331298151. The reversal of 1331298136 is 6318921331.

It is a junction number, because it is equal to n+sod(n) for n = 1331298095 and 1331298104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20845 + ... + 55651.

It is an arithmetic number, because the mean of its divisors is an integer number (89282520).

Almost surely, 2^1331298136 is an apocalyptic number.

It is an amenable number.

1331298136 is an abundant number, since it is smaller than the sum of its proper divisors (1525742504).

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

1331298136 is a wasteful number, since it uses less digits than its factorization.

1331298136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35503 (or 35499 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 1331298136 is about 36486.9584372280. The cubic root of 1331298136 is about 1100.0821249979.

The spelling of 1331298136 in words is "one billion, three hundred thirty-one million, two hundred ninety-eight thousand, one hundred thirty-six".