203310313102121 has 8 divisors (see below), whose sum is σ = 212157415388544. Its totient is φ = 194463837770400.

The previous prime is 203310313102063. The next prime is 203310313102223. The reversal of 203310313102121 is 121201313013302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203310313102121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203310313122121) 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, 156075941 + ... + 157373186.

It is an arithmetic number, because the mean of its divisors is an integer number (26519676923568).

Almost surely, 2^{203310313102121} is an apocalyptic number.

It is an amenable number.

203310313102121 is a deficient number, since it is larger than the sum of its proper divisors (8847102286423).

203310313102121 is a wasteful number, since it uses less digits than its factorization.

203310313102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313477351.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 203310313102121 its reverse (121201313013302), we get a palindrome (324511626115423).

The spelling of 203310313102121 in words is "two hundred three trillion, three hundred ten billion, three hundred thirteen million, one hundred two thousand, one hundred twenty-one".