2315221130 has 32 divisors (see below), whose sum is σ = 4191944400. Its totient is φ = 920650752.

The previous prime is 2315221127. The next prime is 2315221133. The reversal of 2315221130 is 311225132.

It is an interprime number because it is at equal distance from previous prime (2315221127) and next prime (2315221133).

It can be written as a sum of positive squares in 8 ways, for example, as 15155449 + 2300065681 = 3893^2 + 47959^2 .

It is not an unprimeable number, because it can be changed into a prime (2315221133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2294066 + ... + 2295074.

Almost surely, 2^2315221130 is an apocalyptic number.

2315221130 is a deficient number, since it is larger than the sum of its proper divisors (1876723270).

2315221130 is a wasteful number, since it uses less digits than its factorization.

2315221130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2315221130 is about 48116.7447984587. The cubic root of 2315221130 is about 1322.9116036637.

Adding to 2315221130 its reverse (311225132), we get a palindrome (2626446262).

The spelling of 2315221130 in words is "two billion, three hundred fifteen million, two hundred twenty-one thousand, one hundred thirty".