202011312423 has 8 divisors (see below), whose sum is σ = 269787812848. Its totient is φ = 134454510144.

The previous prime is 202011312389. The next prime is 202011312427. The reversal of 202011312423 is 324213110202.

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

It is not a de Polignac number, because 202011312423 - 2¹⁰ = 202011311399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202011312423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202011312427) 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, 54922390 + ... + 54926067.

It is an arithmetic number, because the mean of its divisors is an integer number (33723476606).

Almost surely, 2^202011312423 is an apocalyptic number.

202011312423 is a deficient number, since it is larger than the sum of its proper divisors (67776500425).

202011312423 is a wasteful number, since it uses less digits than its factorization.

202011312423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109849073.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 202011312423 its reverse (324213110202), we get a palindrome (526224422625).

The spelling of 202011312423 in words is "two hundred two billion, eleven million, three hundred twelve thousand, four hundred twenty-three".