202123113 has 8 divisors (see below), whose sum is σ = 270081408. Its totient is φ = 134456784.

The previous prime is 202123111. The next prime is 202123139. The reversal of 202123113 is 311321202.

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

It is not a de Polignac number, because 202123113 - 2¹ = 202123111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202123092 and 202123101.

It is not an unprimeable number, because it can be changed into a prime (202123111) 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, 71370 + ... + 74147.

It is an arithmetic number, because the mean of its divisors is an integer number (33760176).

Almost surely, 2^202123113 is an apocalyptic number.

It is an amenable number.

202123113 is a deficient number, since it is larger than the sum of its proper divisors (67958295).

202123113 is a wasteful number, since it uses less digits than its factorization.

202123113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145983.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 202123113 is about 14217.0008440599. Note that the first 3 decimals coincide. The cubic root of 202123113 is about 586.8656081430.

Adding to 202123113 its reverse (311321202), we get a palindrome (513444315).

The spelling of 202123113 in words is "two hundred two million, one hundred twenty-three thousand, one hundred thirteen".