230121203403 has 32 divisors (see below), whose sum is σ = 377680016896. Its totient is φ = 121368077568.

The previous prime is 230121203401. The next prime is 230121203461. The reversal of 230121203403 is 304302121032.

It is not a de Polignac number, because 230121203403 - 2¹ = 230121203401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 230121203403.

It is not an unprimeable number, because it can be changed into a prime (230121203401) 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, 2462175 + ... + 2553927.

It is an arithmetic number, because the mean of its divisors is an integer number (11802500528).

Almost surely, 2^230121203403 is an apocalyptic number.

230121203403 is a deficient number, since it is larger than the sum of its proper divisors (147558813493).

230121203403 is a wasteful number, since it uses less digits than its factorization.

230121203403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100963.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 230121203403 its reverse (304302121032), we get a palindrome (534423324435).

The spelling of 230121203403 in words is "two hundred thirty billion, one hundred twenty-one million, two hundred three thousand, four hundred three".