2151232241 has 8 divisors (see below), whose sum is σ = 2290362984. Its totient is φ = 2013500160.

The previous prime is 2151232219. The next prime is 2151232243. The reversal of 2151232241 is 1422321512.

It can be written as a sum of positive squares in 4 ways, for example, as 62742241 + 2088490000 = 7921^2 + 45700^2 .

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 2151232241 - 2⁶ = 2151232177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151232243) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 346490 + ... + 352643.

It is an arithmetic number, because the mean of its divisors is an integer number (286295373).

Almost surely, 2^2151232241 is an apocalyptic number.

It is an amenable number.

2151232241 is a deficient number, since it is larger than the sum of its proper divisors (139130743).

2151232241 is a wasteful number, since it uses less digits than its factorization.

2151232241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699331.

The product of its digits is 960, while the sum is 23.

The square root of 2151232241 is about 46381.3781705546. The cubic root of 2151232241 is about 1290.9094084222.

Adding to 2151232241 its reverse (1422321512), we get a palindrome (3573553753).

The spelling of 2151232241 in words is "two billion, one hundred fifty-one million, two hundred thirty-two thousand, two hundred forty-one".