203121096 has 128 divisors (see below), whose sum is σ = 566092800. Its totient is φ = 60445440.

The previous prime is 203121089. The next prime is 203121097. The reversal of 203121096 is 690121302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (203121097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1122126 + ... + 1122306.

It is an arithmetic number, because the mean of its divisors is an integer number (4422600).

Almost surely, 2^203121096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203121096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283046400).

203121096 is an abundant number, since it is smaller than the sum of its proper divisors (362971704).

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

203121096 is a wasteful number, since it uses less digits than its factorization.

203121096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 203121096 is about 14252.0558517008. The cubic root of 203121096 is about 587.8299059120.

Adding to 203121096 its reverse (690121302), we get a palindrome (893242398).

The spelling of 203121096 in words is "two hundred three million, one hundred twenty-one thousand, ninety-six".