1131430 has 8 divisors (see below), whose sum is σ = 2036592. Its totient is φ = 452568.

The previous prime is 1131421. The next prime is 1131437. The reversal of 1131430 is 341311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131430.

It is a congruent number.

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, 56562 + ... + 56581.

It is an arithmetic number, because the mean of its divisors is an integer number (254574).

2^1131430 is an apocalyptic number.

1131430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131430 is a deficient number, since it is larger than the sum of its proper divisors (905162).

1131430 is a wasteful number, since it uses less digits than its factorization.

1131430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113150.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1131430 is about 1063.6869840324. The cubic root of 1131430 is about 104.2019620837.

Adding to 1131430 its reverse (341311), we get a palindrome (1472741).

The spelling of 1131430 in words is "one million, one hundred thirty-one thousand, four hundred thirty".