202113231113 has 4 divisors (see below), whose sum is σ = 202115201940. Its totient is φ = 202111260288.

The previous prime is 202113231107. The next prime is 202113231137. The reversal of 202113231113 is 311132311202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103238830864 + 98874400249 = 321308^2 + 314443^2 .

It is a cyclic number.

It is not a de Polignac number, because 202113231113 - 2⁸ = 202113230857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202113231163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822620 + ... + 1039677.

It is an arithmetic number, because the mean of its divisors is an integer number (50528800485).

Almost surely, 2^202113231113 is an apocalyptic number.

It is an amenable number.

202113231113 is a deficient number, since it is larger than the sum of its proper divisors (1970827).

202113231113 is a wasteful number, since it uses less digits than its factorization.

202113231113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970826.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 202113231113 its reverse (311132311202), we get a palindrome (513245542315).

The spelling of 202113231113 in words is "two hundred two billion, one hundred thirteen million, two hundred thirty-one thousand, one hundred thirteen".