1131133001 has 4 divisors (see below), whose sum is σ = 1131382404. Its totient is φ = 1130883600.

The previous prime is 1131132979. The next prime is 1131133009. The reversal of 1131133001 is 1003311311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149940025 + 981192976 = 12245^2 + 31324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131133001 - 2¹⁸ = 1130870857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131133009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117770 + ... + 127011.

It is an arithmetic number, because the mean of its divisors is an integer number (282845601).

Almost surely, 2^1131133001 is an apocalyptic number.

It is an amenable number.

1131133001 is a deficient number, since it is larger than the sum of its proper divisors (249403).

1131133001 is an equidigital number, since it uses as much as digits as its factorization.

1131133001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249402.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1131133001 is about 33632.3207792742. The cubic root of 1131133001 is about 1041.9284365636.

Adding to 1131133001 its reverse (1003311311), we get a palindrome (2134444312).

The spelling of 1131133001 in words is "one billion, one hundred thirty-one million, one hundred thirty-three thousand, one".