202113030131023 has 4 divisors (see below), whose sum is σ = 220486941961128. Its totient is φ = 183739118300920.

The previous prime is 202113030131017. The next prime is 202113030131041. The reversal of 202113030131023 is 320131030311202.

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

It is a cyclic number.

It is not a de Polignac number, because 202113030131023 - 2²¹ = 202113028033871 is a prime.

It is a super-2 number, since 2×202113030131023² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202113030130985 and 202113030131003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202113030131083) 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, 9186955915036 + ... + 9186955915057.

It is an arithmetic number, because the mean of its divisors is an integer number (55121735490282).

Almost surely, 2^{202113030131023} is an apocalyptic number.

202113030131023 is a deficient number, since it is larger than the sum of its proper divisors (18373911830105).

202113030131023 is a wasteful number, since it uses less digits than its factorization.

202113030131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18373911830104.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 202113030131023 its reverse (320131030311202), we get a palindrome (522244060442225).

The spelling of 202113030131023 in words is "two hundred two trillion, one hundred thirteen billion, thirty million, one hundred thirty-one thousand, twenty-three".