203111344120 has 32 divisors (see below), whose sum is σ = 466723944000. Its totient is φ = 79515929728.

The previous prime is 203111344103. The next prime is 203111344169. The reversal of 203111344120 is 21443111302.

It is a super-2 number, since 2×203111344120² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203111344091 and 203111344100.

It is a congruent number.

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, 54017095 + ... + 54020854.

It is an arithmetic number, because the mean of its divisors is an integer number (14585123250).

Almost surely, 2^203111344120 is an apocalyptic number.

203111344120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203111344120 is an abundant number, since it is smaller than the sum of its proper divisors (263612599880).

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

203111344120 is a wasteful number, since it uses less digits than its factorization.

203111344120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108038007 (or 108038003 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 203111344120 its reverse (21443111302), we get a palindrome (224554455422).

The spelling of 203111344120 in words is "two hundred three billion, one hundred eleven million, three hundred forty-four thousand, one hundred twenty".