1331133040 has 20 divisors (see below), whose sum is σ = 3094884504. Its totient is φ = 532453184.

The previous prime is 1331133017. The next prime is 1331133049. The reversal of 1331133040 is 403311331.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1331132999 and 1331133017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331133049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8319502 + ... + 8319661.

Almost surely, 2^1331133040 is an apocalyptic number.

1331133040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331133040 is an abundant number, since it is smaller than the sum of its proper divisors (1763751464).

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

1331133040 is a wasteful number, since it uses less digits than its factorization.

1331133040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16639176 (or 16639170 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1331133040 is about 36484.6959696802. The cubic root of 1331133040 is about 1100.0366489167.

Adding to 1331133040 its reverse (403311331), we get a palindrome (1734444371).

The spelling of 1331133040 in words is "one billion, three hundred thirty-one million, one hundred thirty-three thousand, forty".