1131432 has 16 divisors (see below), whose sum is σ = 2828640. Its totient is φ = 377136.

The previous prime is 1131421. The next prime is 1131437. The reversal of 1131432 is 2341311.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1131437) 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, 23548 + ... + 23595.

It is an arithmetic number, because the mean of its divisors is an integer number (176790).

2^1131432 is an apocalyptic number.

1131432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131432 is an abundant number, since it is smaller than the sum of its proper divisors (1697208).

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

1131432 is a wasteful number, since it uses less digits than its factorization.

1131432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47152 (or 47148 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 1131432 is about 1063.6879241582. The cubic root of 1131432 is about 104.2020234821.

Adding to 1131432 its reverse (2341311), we get a palindrome (3472743).

The spelling of 1131432 in words is "one million, one hundred thirty-one thousand, four hundred thirty-two".