1131021430 has 48 divisors (see below), whose sum is σ = 2583525456. Its totient is φ = 352524480.

The previous prime is 1131021427. The next prime is 1131021461. The reversal of 1131021430 is 341201311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99529 + ... + 110308.

It is an arithmetic number, because the mean of its divisors is an integer number (53823447).

Almost surely, 2^1131021430 is an apocalyptic number.

1131021430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131021430 is an abundant number, since it is smaller than the sum of its proper divisors (1452504026).

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

1131021430 is a wasteful number, since it uses less digits than its factorization.

1131021430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209869 (or 209862 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1131021430 is about 33630.6620511699. The cubic root of 1131021430 is about 1041.8941780459.

Adding to 1131021430 its reverse (341201311), we get a palindrome (1472222741).

The spelling of 1131021430 in words is "one billion, one hundred thirty-one million, twenty-one thousand, four hundred thirty".