1151143201 has 4 divisors (see below), whose sum is σ = 1239692692. Its totient is φ = 1062593712.

The previous prime is 1151143127. The next prime is 1151143283. The reversal of 1151143201 is 1023411511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1023411511 = 47 ⋅21774713.

It can be written as a sum of positive squares in 2 ways, for example, as 233356176 + 917787025 = 15276^2 + 30295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151143201 - 2⁷ = 1151143073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151143601) 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, 44274726 + ... + 44274751.

It is an arithmetic number, because the mean of its divisors is an integer number (309923173).

Almost surely, 2^1151143201 is an apocalyptic number.

It is an amenable number.

1151143201 is a deficient number, since it is larger than the sum of its proper divisors (88549491).

1151143201 is an equidigital number, since it uses as much as digits as its factorization.

1151143201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88549490.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1151143201 is about 33928.5013078975. The cubic root of 1151143201 is about 1048.0366033410.

Adding to 1151143201 its reverse (1023411511), we get a palindrome (2174554712).

The spelling of 1151143201 in words is "one billion, one hundred fifty-one million, one hundred forty-three thousand, two hundred one".