1131029040 has 80 divisors (see below), whose sum is σ = 3712449888. Its totient is φ = 283865088.

The previous prime is 1131028991. The next prime is 1131029047. The reversal of 1131029040 is 409201311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1131028998 and 1131029016.

It is not an unprimeable number, because it can be changed into a prime (1131029047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134527 + ... + 142686.

Almost surely, 2^1131029040 is an apocalyptic number.

1131029040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131029040 is an abundant number, since it is smaller than the sum of its proper divisors (2581420848).

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

1131029040 is a wasteful number, since it uses less digits than its factorization.

1131029040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277246 (or 277240 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1131029040 is about 33630.7751917793. The cubic root of 1131029040 is about 1041.8965148118.

The spelling of 1131029040 in words is "one billion, one hundred thirty-one million, twenty-nine thousand, forty".