1131240201 has 24 divisors (see below), whose sum is σ = 1866600000. Its totient is φ = 596696256.

The previous prime is 1131240191. The next prime is 1131240269. The reversal of 1131240201 is 1020421311.

It is not a de Polignac number, because 1131240201 - 2⁶ = 1131240137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131260201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155826 + ... + 162923.

It is an arithmetic number, because the mean of its divisors is an integer number (77775000).

Almost surely, 2^1131240201 is an apocalyptic number.

It is an amenable number.

1131240201 is a deficient number, since it is larger than the sum of its proper divisors (735359799).

1131240201 is a wasteful number, since it uses less digits than its factorization.

1131240201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318785 (or 318772 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1131240201 is about 33633.9144465820. The cubic root of 1131240201 is about 1041.9613508186.

Adding to 1131240201 its reverse (1020421311), we get a palindrome (2151661512).

The spelling of 1131240201 in words is "one billion, one hundred thirty-one million, two hundred forty thousand, two hundred one".