2315532145 has 8 divisors (see below), whose sum is σ = 2778972840. Its totient is φ = 1852202880.

The previous prime is 2315532143. The next prime is 2315532157. The reversal of 2315532145 is 5412355132.

It can be written as a sum of positive squares in 4 ways, for example, as 241367296 + 2074164849 = 15536^2 + 45543^2 .

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

It is not a de Polignac number, because 2315532145 - 2¹ = 2315532143 is a prime.

It is a super-2 number, since 2×2315532145² = 10723378229056602050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2315532143) 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, 28075 + ... + 73615.

It is an arithmetic number, because the mean of its divisors is an integer number (347371605).

Almost surely, 2^2315532145 is an apocalyptic number.

It is an amenable number.

2315532145 is a deficient number, since it is larger than the sum of its proper divisors (463440695).

2315532145 is a wasteful number, since it uses less digits than its factorization.

2315532145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55715.

The product of its digits is 18000, while the sum is 31.

The square root of 2315532145 is about 48119.9765689885. The cubic root of 2315532145 is about 1322.9708387442.

Adding to 2315532145 its reverse (5412355132), we get a palindrome (7727887277).

The spelling of 2315532145 in words is "two billion, three hundred fifteen million, five hundred thirty-two thousand, one hundred forty-five".