1131245201 has 8 divisors (see below), whose sum is σ = 1147832064. Its totient is φ = 1114676640.

The previous prime is 1131245153. The next prime is 1131245231. The reversal of 1131245201 is 1025421311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131245201 - 2¹⁴ = 1131228817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131245231) 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, 165416 + ... + 172118.

It is an arithmetic number, because the mean of its divisors is an integer number (143479008).

Almost surely, 2^1131245201 is an apocalyptic number.

It is an amenable number.

1131245201 is a deficient number, since it is larger than the sum of its proper divisors (16586863).

1131245201 is an equidigital number, since it uses as much as digits as its factorization.

1131245201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9151.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1131245201 is about 33633.9887762365. The cubic root of 1131245201 is about 1041.9628859476.

Adding to 1131245201 its reverse (1025421311), we get a palindrome (2156666512).

The spelling of 1131245201 in words is "one billion, one hundred thirty-one million, two hundred forty-five thousand, two hundred one".