1131032121 has 8 divisors (see below), whose sum is σ = 1512316320. Its totient is φ = 751884672.

The previous prime is 1131032113. The next prime is 1131032197. The reversal of 1131032121 is 1212301311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131032121 - 2³ = 1131032113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131032121.

It is not an unprimeable number, because it can be changed into a prime (1131032101) 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, 532951 + ... + 535068.

It is an arithmetic number, because the mean of its divisors is an integer number (189039540).

Almost surely, 2^1131032121 is an apocalyptic number.

It is an amenable number.

1131032121 is a deficient number, since it is larger than the sum of its proper divisors (381284199).

1131032121 is a wasteful number, since it uses less digits than its factorization.

1131032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068375.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1131032121 is about 33630.8209980072. The cubic root of 1131032121 is about 1041.8974608765.

Adding to 1131032121 its reverse (1212301311), we get a palindrome (2343333432).

The spelling of 1131032121 in words is "one billion, one hundred thirty-one million, thirty-two thousand, one hundred twenty-one".