203123210404030 has 96 divisors (see below), whose sum is σ = 439251194995200. Its totient is φ = 66242170733376.

The previous prime is 203123210404003. The next prime is 203123210404039. The reversal of 203123210404030 is 30404012321302.

It is a junction number, because it is equal to n+sod(n) for n = 203123210403986 and 203123210404004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123210404039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8693890 + ... + 21950629.

It is an arithmetic number, because the mean of its divisors is an integer number (4575533281200).

Almost surely, 2^{203123210404030} is an apocalyptic number.

203123210404030 is an abundant number, since it is smaller than the sum of its proper divisors (236127984591170).

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

203123210404030 is a wasteful number, since it uses less digits than its factorization.

203123210404030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30644758 (or 30644735 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 203123210404030 its reverse (30404012321302), we get a palindrome (233527222725332).

The spelling of 203123210404030 in words is "two hundred three trillion, one hundred twenty-three billion, two hundred ten million, four hundred four thousand, thirty".