1131402430 has 32 divisors (see below), whose sum is σ = 2128633344. Its totient is φ = 432158496.

The previous prime is 1131402413. The next prime is 1131402439. The reversal of 1131402430 is 342041311.

It is a junction number, because it is equal to n+sod(n) for n = 1131402398 and 1131402407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131402439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145009 + ... + 152611.

It is an arithmetic number, because the mean of its divisors is an integer number (66519792).

Almost surely, 2^1131402430 is an apocalyptic number.

1131402430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131402430 is a deficient number, since it is larger than the sum of its proper divisors (997230914).

1131402430 is a wasteful number, since it uses less digits than its factorization.

1131402430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1131402430 is about 33636.3260478905. The cubic root of 1131402430 is about 1042.0111570012.

Adding to 1131402430 its reverse (342041311), we get a palindrome (1473443741).

The spelling of 1131402430 in words is "one billion, one hundred thirty-one million, four hundred two thousand, four hundred thirty".