1131333201 has 48 divisors (see below), whose sum is σ = 1728604800. Its totient is φ = 712191744.

The previous prime is 1131333199. The next prime is 1131333209. The reversal of 1131333201 is 1023331311.

It is a happy number.

1131333201 is a `hidden beast` number, since 1 + 131 + 333 + 201 = 666.

It is not a de Polignac number, because 1131333201 - 2¹ = 1131333199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131333209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1748260 + ... + 1748906.

It is an arithmetic number, because the mean of its divisors is an integer number (36012600).

Almost surely, 2^1131333201 is an apocalyptic number.

It is an amenable number.

1131333201 is a deficient number, since it is larger than the sum of its proper divisors (597271599).

1131333201 is a wasteful number, since it uses less digits than its factorization.

1131333201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1131333201 is about 33635.2969512683. The cubic root of 1131333201 is about 1041.9899034785.

Adding to 1131333201 its reverse (1023331311), we get a palindrome (2154664512).

The spelling of 1131333201 in words is "one billion, one hundred thirty-one million, three hundred thirty-three thousand, two hundred one".