203121013030 has 16 divisors (see below), whose sum is σ = 393742271664. Its totient is φ = 74998527840.

The previous prime is 203121013001. The next prime is 203121013031. The reversal of 203121013030 is 30310121302.

It is a junction number, because it is equal to n+sod(n) for n = 203121012995 and 203121013013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203121013031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781234536 + ... + 781234795.

It is an arithmetic number, because the mean of its divisors is an integer number (24608891979).

Almost surely, 2^203121013030 is an apocalyptic number.

203121013030 is a deficient number, since it is larger than the sum of its proper divisors (190621258634).

203121013030 is a wasteful number, since it uses less digits than its factorization.

203121013030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562469351.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 203121013030 its reverse (30310121302), we get a palindrome (233431134332).

The spelling of 203121013030 in words is "two hundred three billion, one hundred twenty-one million, thirteen thousand, thirty".