1131087450 has 24 divisors (see below), whose sum is σ = 2805097248. Its totient is φ = 301623280.

The previous prime is 1131087449. The next prime is 1131087457. The reversal of 1131087450 is 547801311.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1131087457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3770142 + ... + 3770441.

It is an arithmetic number, because the mean of its divisors is an integer number (116879052).

Almost surely, 2^1131087450 is an apocalyptic number.

1131087450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131087450 is an abundant number, since it is smaller than the sum of its proper divisors (1674009798).

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

1131087450 is a wasteful number, since it uses less digits than its factorization.

1131087450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7540598 (or 7540593 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1131087450 is about 33631.6435816033. The cubic root of 1131087450 is about 1041.9144501390.

Adding to 1131087450 its reverse (547801311), we get a palindrome (1678888761).

The spelling of 1131087450 in words is "one billion, one hundred thirty-one million, eighty-seven thousand, four hundred fifty".