1131434121 has 4 divisors (see below), whose sum is σ = 1508578832. Its totient is φ = 754289412.

The previous prime is 1131434113. The next prime is 1131434123. The reversal of 1131434121 is 1214341311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1131434121 - 2³ = 1131434113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131434123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188572351 + ... + 188572356.

It is an arithmetic number, because the mean of its divisors is an integer number (377144708).

Almost surely, 2^1131434121 is an apocalyptic number.

It is an amenable number.

1131434121 is a deficient number, since it is larger than the sum of its proper divisors (377144711).

1131434121 is an equidigital number, since it uses as much as digits as its factorization.

1131434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377144710.

The product of its digits is 288, while the sum is 21.

The square root of 1131434121 is about 33636.7971275507. The cubic root of 1131434121 is about 1042.0208859495.

Adding to 1131434121 its reverse (1214341311), we get a palindrome (2345775432).

The spelling of 1131434121 in words is "one billion, one hundred thirty-one million, four hundred thirty-four thousand, one hundred twenty-one".