20152313 has 2 divisors, whose sum is σ = 20152314. Its totient is φ = 20152312.

The previous prime is 20152291. The next prime is 20152333. The reversal of 20152313 is 31325102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16104169 + 4048144 = 4013^2 + 2012^2 .

It is a cyclic number.

It is not a de Polignac number, because 20152313 - 2¹² = 20148217 is a prime.

It is a super-2 number, since 2×20152313² = 812231438499938, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20152291 and 20152300.

It is not a weakly prime, because it can be changed into another prime (20152333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076156 + 10076157.

It is an arithmetic number, because the mean of its divisors is an integer number (10076157).

Almost surely, 2^20152313 is an apocalyptic number.

It is an amenable number.

20152313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20152313 is an equidigital number, since it uses as much as digits as its factorization.

20152313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20152313 is about 4489.1327670275. The cubic root of 20152313 is about 272.1290882723.

Adding to 20152313 its reverse (31325102), we get a palindrome (51477415).

The spelling of 20152313 in words is "twenty million, one hundred fifty-two thousand, three hundred thirteen".