1131043420 has 24 divisors (see below), whose sum is σ = 2557898784. Its totient is φ = 417615936.

The previous prime is 1131043411. The next prime is 1131043429. The reversal of 1131043420 is 243401311.

It is an interprime number because it is at equal distance from previous prime (1131043411) and next prime (1131043429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131043429) 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, 2174824 + ... + 2175343.

It is an arithmetic number, because the mean of its divisors is an integer number (106579116).

Almost surely, 2^1131043420 is an apocalyptic number.

1131043420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131043420 is an abundant number, since it is smaller than the sum of its proper divisors (1426855364).

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

1131043420 is a wasteful number, since it uses less digits than its factorization.

1131043420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350189 (or 4350187 counting only the distinct ones).

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

The square root of 1131043420 is about 33630.9889833766. The cubic root of 1131043420 is about 1041.9009303802.

Adding to 1131043420 its reverse (243401311), we get a palindrome (1374444731).

The spelling of 1131043420 in words is "one billion, one hundred thirty-one million, forty-three thousand, four hundred twenty".