1131551002 has 4 divisors (see below), whose sum is σ = 1697326506. Its totient is φ = 565775500.

The previous prime is 1131550999. The next prime is 1131551017. The reversal of 1131551002 is 2001551311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2001551311 = 103 ⋅19432537.

It can be written as a sum of positive squares in only one way, i.e., 1065957201 + 65593801 = 32649^2 + 8099^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282887749 + ... + 282887752.

Almost surely, 2^1131551002 is an apocalyptic number.

1131551002 is a deficient number, since it is larger than the sum of its proper divisors (565775504).

1131551002 is an equidigital number, since it uses as much as digits as its factorization.

1131551002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565775503.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1131551002 is about 33638.5344805626. The cubic root of 1131551002 is about 1042.0567661501.

The spelling of 1131551002 in words is "one billion, one hundred thirty-one million, five hundred fifty-one thousand, two".