1131641040 has 80 divisors (see below), whose sum is σ = 3714458688. Its totient is φ = 284018688.

The previous prime is 1131641039. The next prime is 1131641047. The reversal of 1131641040 is 401461311.

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

It is a super-2 number, since 2×1131641040² = 2561222886824563200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131640998 and 1131641016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131641047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134602 + ... + 142761.

Almost surely, 2^1131641040 is an apocalyptic number.

1131641040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131641040 is an abundant number, since it is smaller than the sum of its proper divisors (2582817648).

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

1131641040 is a wasteful number, since it uses less digits than its factorization.

1131641040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277396 (or 277390 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1131641040 is about 33639.8727702707. The cubic root of 1131641040 is about 1042.0844043854.

The spelling of 1131641040 in words is "one billion, one hundred thirty-one million, six hundred forty-one thousand, forty".