20154210313 has 4 divisors (see below), whose sum is σ = 20397032208. Its totient is φ = 19911388420.

The previous prime is 20154210269. The next prime is 20154210317. The reversal of 20154210313 is 31301245102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20154210313 - 2²¹ = 20152113161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20154210317) 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 3 ways as a sum of consecutive naturals, for example, 121410823 + ... + 121410988.

It is an arithmetic number, because the mean of its divisors is an integer number (5099258052).

Almost surely, 2^20154210313 is an apocalyptic number.

It is an amenable number.

20154210313 is a deficient number, since it is larger than the sum of its proper divisors (242821895).

20154210313 is an equidigital number, since it uses as much as digits as its factorization.

20154210313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242821894.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20154210313 its reverse (31301245102), we get a palindrome (51455455415).

The spelling of 20154210313 in words is "twenty billion, one hundred fifty-four million, two hundred ten thousand, three hundred thirteen".