2315145 has 32 divisors (see below), whose sum is σ = 4485888. Its totient is φ = 995328.

The previous prime is 2315141. The next prime is 2315149. The reversal of 2315145 is 5415132.

2315145 = 361² + 362² + ... + 377².

It is an interprime number because it is at equal distance from previous prime (2315141) and next prime (2315149).

It is not a de Polignac number, because 2315145 - 2² = 2315141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

2315145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2315141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1137 + ... + 2433.

It is an arithmetic number, because the mean of its divisors is an integer number (140184).

2^2315145 is an apocalyptic number.

It is an amenable number.

2315145 is a deficient number, since it is larger than the sum of its proper divisors (2170743).

2315145 is a wasteful number, since it uses less digits than its factorization.

2315145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

The product of its digits is 600, while the sum is 21.

The square root of 2315145 is about 1521.5600546807. The cubic root of 2315145 is about 132.2897103340.

The spelling of 2315145 in words is "two million, three hundred fifteen thousand, one hundred forty-five".