203012012313 has 128 divisors (see below), whose sum is σ = 346030755840. Its totient is φ = 116436418560.

The previous prime is 203012012311. The next prime is 203012012477. The reversal of 203012012313 is 313210210302.

203012012313 is a `hidden beast` number, since 20 + 301 + 20 + 12 + 313 = 666.

It is not a de Polignac number, because 203012012313 - 2¹ = 203012012311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203012012311) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 345846406 + ... + 345846992.

It is an arithmetic number, because the mean of its divisors is an integer number (2703365280).

Almost surely, 2^203012012313 is an apocalyptic number.

203012012313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

203012012313 is a deficient number, since it is larger than the sum of its proper divisors (143018743527).

203012012313 is a wasteful number, since it uses less digits than its factorization.

203012012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203012012313 its reverse (313210210302), we get a palindrome (516222222615).

The spelling of 203012012313 in words is "two hundred three billion, twelve million, twelve thousand, three hundred thirteen".