1131503430 has 32 divisors (see below), whose sum is σ = 2717906400. Its totient is φ = 301478912.

The previous prime is 1131503407. The next prime is 1131503473. The reversal of 1131503430 is 343051311.

It is a junction number, because it is equal to n+sod(n) for n = 1131503397 and 1131503406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21526 + ... + 52214.

It is an arithmetic number, because the mean of its divisors is an integer number (84934575).

Almost surely, 2^1131503430 is an apocalyptic number.

1131503430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131503430 is an abundant number, since it is smaller than the sum of its proper divisors (1586402970).

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

1131503430 is a wasteful number, since it uses less digits than its factorization.

1131503430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31928.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1131503430 is about 33637.8273674148. The cubic root of 1131503430 is about 1042.0421627668.

Adding to 1131503430 its reverse (343051311), we get a palindrome (1474554741).

The spelling of 1131503430 in words is "one billion, one hundred thirty-one million, five hundred three thousand, four hundred thirty".