1131960 has 32 divisors (see below), whose sum is σ = 3396240. Its totient is φ = 301824.

The previous prime is 1131959. The next prime is 1131961. The reversal of 1131960 is 691311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1131959) and next prime (1131961).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4597 + ... + 4836.

2^1131960 is an apocalyptic number.

1131960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131960 is an abundant number, since it is smaller than the sum of its proper divisors (2264280).

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

1131960 is a wasteful number, since it uses less digits than its factorization.

1131960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447 (or 9443 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1131960 is about 1063.9360883061. The cubic root of 1131960 is about 104.2182301159.

The spelling of 1131960 in words is "one million, one hundred thirty-one thousand, nine hundred sixty".