203212434124 has 24 divisors (see below), whose sum is σ = 406511003808. Its totient is φ = 87072585600.

The previous prime is 203212434109. The next prime is 203212434133. The reversal of 203212434124 is 421434212302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 203212434092 and 203212434101.

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, 634177 + ... + 899224.

It is an arithmetic number, because the mean of its divisors is an integer number (16937958492).

Almost surely, 2^203212434124 is an apocalyptic number.

It is an amenable number.

203212434124 is an abundant number, since it is smaller than the sum of its proper divisors (203298569684).

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

203212434124 is a wasteful number, since it uses less digits than its factorization.

203212434124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538145 (or 1538143 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 203212434124 its reverse (421434212302), we get a palindrome (624646646426).

The spelling of 203212434124 in words is "two hundred three billion, two hundred twelve million, four hundred thirty-four thousand, one hundred twenty-four".