1131021404 has 12 divisors (see below), whose sum is σ = 1979866728. Its totient is φ = 565345200.

The previous prime is 1131021403. The next prime is 1131021421. The reversal of 1131021404 is 4041201311.

It is a happy number.

It is a super-2 number, since 2×1131021404² = 2558418832612262432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131021403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25307 + ... + 53874.

It is an arithmetic number, because the mean of its divisors is an integer number (164988894).

Almost surely, 2^1131021404 is an apocalyptic number.

It is an amenable number.

1131021404 is a deficient number, since it is larger than the sum of its proper divisors (848845324).

1131021404 is a wasteful number, since it uses less digits than its factorization.

1131021404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82756 (or 82754 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1131021404 is about 33630.6616646179. The cubic root of 1131021404 is about 1041.8941700621.

Adding to 1131021404 its reverse (4041201311), we get a palindrome (5172222715).

The spelling of 1131021404 in words is "one billion, one hundred thirty-one million, twenty-one thousand, four hundred four".