1131001201 has 16 divisors (see below), whose sum is σ = 1303061760. Its totient is φ = 970840080.

The previous prime is 1131001199. The next prime is 1131001213. The reversal of 1131001201 is 1021001311.

It is a cyclic number.

It is not a de Polignac number, because 1131001201 - 2¹ = 1131001199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131001271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55350 + ... + 72976.

It is an arithmetic number, because the mean of its divisors is an integer number (81441360).

Almost surely, 2^1131001201 is an apocalyptic number.

1131001201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1131001201 is a deficient number, since it is larger than the sum of its proper divisors (172060559).

1131001201 is a wasteful number, since it uses less digits than its factorization.

1131001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17964.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1131001201 is about 33630.3612974943. The cubic root of 1131001201 is about 1041.8879663737.

Adding to 1131001201 its reverse (1021001311), we get a palindrome (2152002512).

The spelling of 1131001201 in words is "one billion, one hundred thirty-one million, one thousand, two hundred one".