20130312313 has 8 divisors (see below), whose sum is σ = 20156574536. Its totient is φ = 20104070400.

The previous prime is 20130312311. The next prime is 20130312331. The reversal of 20130312313 is 31321303102.

It can be written as a sum of positive squares in 4 ways, for example, as 387814249 + 19742498064 = 19693^2 + 140508^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20130312313 - 2¹ = 20130312311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130312311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3013345 + ... + 3020017.

It is an arithmetic number, because the mean of its divisors is an integer number (2519571817).

Almost surely, 2^20130312313 is an apocalyptic number.

It is an amenable number.

20130312313 is a deficient number, since it is larger than the sum of its proper divisors (26262223).

20130312313 is a wasteful number, since it uses less digits than its factorization.

20130312313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10155.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20130312313 its reverse (31321303102), we get a palindrome (51451615415).

The spelling of 20130312313 in words is "twenty billion, one hundred thirty million, three hundred twelve thousand, three hundred thirteen".