20310003013 has 4 divisors (see below), whose sum is σ = 21378950560. Its totient is φ = 19241055468.

The previous prime is 20310002939. The next prime is 20310003019. The reversal of 20310003013 is 31030001302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31030001302 = 2 ⋅15515000651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20310003013 is a prime.

It is a super-3 number, since 3×20310003013³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20310002984 and 20310003002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310003019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534473745 + ... + 534473782.

It is an arithmetic number, because the mean of its divisors is an integer number (5344737640).

Almost surely, 2^20310003013 is an apocalyptic number.

It is an amenable number.

20310003013 is a deficient number, since it is larger than the sum of its proper divisors (1068947547).

20310003013 is a wasteful number, since it uses less digits than its factorization.

20310003013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068947546.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 20310003013 its reverse (31030001302), we get a palindrome (51340004315).

The spelling of 20310003013 in words is "twenty billion, three hundred ten million, three thousand, thirteen".