20154313 has 2 divisors, whose sum is σ = 20154314. Its totient is φ = 20154312.

The previous prime is 20154311. The next prime is 20154347. The reversal of 20154313 is 31345102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18636489 + 1517824 = 4317^2 + 1232^2 .

It is a cyclic number.

It is not a de Polignac number, because 20154313 - 2¹ = 20154311 is a prime.

Together with 20154311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20154311) 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 as a sum of consecutive naturals, namely, 10077156 + 10077157.

It is an arithmetic number, because the mean of its divisors is an integer number (10077157).

Almost surely, 2^20154313 is an apocalyptic number.

It is an amenable number.

20154313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20154313 is an equidigital number, since it uses as much as digits as its factorization.

20154313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20154313 is about 4489.3555216757. The cubic root of 20154313 is about 272.1380903849.

Adding to 20154313 its reverse (31345102), we get a palindrome (51499415).

It can be divided in two parts, 2015 and 4313, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 20154313 in words is "twenty million, one hundred fifty-four thousand, three hundred thirteen".