1131031201 has 4 divisors (see below), whose sum is σ = 1132920000. Its totient is φ = 1129142404.

The previous prime is 1131031189. The next prime is 1131031217. The reversal of 1131031201 is 1021301311.

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 a cyclic number.

It is not a de Polignac number, because 1131031201 - 2¹³ = 1131023009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131031241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 943501 + ... + 944698.

It is an arithmetic number, because the mean of its divisors is an integer number (283230000).

Almost surely, 2^1131031201 is an apocalyptic number.

It is an amenable number.

1131031201 is a deficient number, since it is larger than the sum of its proper divisors (1888799).

1131031201 is an equidigital number, since it uses as much as digits as its factorization.

1131031201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888798.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1131031201 is about 33630.8073200748. The cubic root of 1131031201 is about 1041.8971783777.

Adding to 1131031201 its reverse (1021301311), we get a palindrome (2152332512).

The spelling of 1131031201 in words is "one billion, one hundred thirty-one million, thirty-one thousand, two hundred one".