20030312313 has 64 divisors (see below), whose sum is σ = 33277858560. Its totient is φ = 11804083200.

The previous prime is 20030312311. The next prime is 20030312347. The reversal of 20030312313 is 31321303002.

It is not a de Polignac number, because 20030312313 - 2¹ = 20030312311 is a prime.

It is a super-2 number, since 2×20030312313² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20030312311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1773103 + ... + 1784363.

It is an arithmetic number, because the mean of its divisors is an integer number (519966540).

Almost surely, 2^20030312313 is an apocalyptic number.

It is an amenable number.

20030312313 is a deficient number, since it is larger than the sum of its proper divisors (13247546247).

20030312313 is a wasteful number, since it uses less digits than its factorization.

20030312313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11447 (or 11441 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20030312313 its reverse (31321303002), we get a palindrome (51351615315).

The spelling of 20030312313 in words is "twenty billion, thirty million, three hundred twelve thousand, three hundred thirteen".