1131102444 has 24 divisors (see below), whose sum is σ = 2700617920. Its totient is φ = 368265744.

The previous prime is 1131102407. The next prime is 1131102449. The reversal of 1131102444 is 4442011311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131102444.

It is not an unprimeable number, because it can be changed into a prime (1131102449) 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, 1095514 + ... + 1096545.

Almost surely, 2^1131102444 is an apocalyptic number.

It is an amenable number.

1131102444 is an abundant number, since it is smaller than the sum of its proper divisors (1569515476).

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

1131102444 is a wasteful number, since it uses less digits than its factorization.

1131102444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192109 (or 2192107 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1131102444 is about 33631.8664959291. The cubic root of 1131102444 is about 1041.9190540849.

Adding to 1131102444 its reverse (4442011311), we get a palindrome (5573113755).

The spelling of 1131102444 in words is "one billion, one hundred thirty-one million, one hundred two thousand, four hundred forty-four".