203312111312420 has 24 divisors (see below), whose sum is σ = 465769564098048. Its totient is φ = 73931676840800.

The previous prime is 203312111312407. The next prime is 203312111312441. The reversal of 203312111312420 is 24213111213302.

It is a self number, because there is not a number n which added to its sum of digits gives 203312111312420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462072980036 + ... + 462072980475.

It is an arithmetic number, because the mean of its divisors is an integer number (19407065170752).

Almost surely, 2^{203312111312420} is an apocalyptic number.

203312111312420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203312111312420 is an abundant number, since it is smaller than the sum of its proper divisors (262457452785628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203312111312420 is a wasteful number, since it uses less digits than its factorization.

203312111312420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924145960531 (or 924145960529 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 203312111312420 its reverse (24213111213302), we get a palindrome (227525222525722).

The spelling of 203312111312420 in words is "two hundred three trillion, three hundred twelve billion, one hundred eleven million, three hundred twelve thousand, four hundred twenty".