20120404313 has 2 divisors, whose sum is σ = 20120404314. Its totient is φ = 20120404312.

The previous prime is 20120404309. The next prime is 20120404433. The reversal of 20120404313 is 31340402102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20069538889 + 50865424 = 141667^2 + 7132^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120404313 - 2² = 20120404309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20120404303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060202156 + 10060202157.

It is an arithmetic number, because the mean of its divisors is an integer number (10060202157).

Almost surely, 2^20120404313 is an apocalyptic number.

It is an amenable number.

20120404313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120404313 is an equidigital number, since it uses as much as digits as its factorization.

20120404313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20120404313 its reverse (31340402102), we get a palindrome (51460806415).

The spelling of 20120404313 in words is "twenty billion, one hundred twenty million, four hundred four thousand, three hundred thirteen".