202543151423 has 4 divisors (see below), whose sum is σ = 203785747608. Its totient is φ = 201300555240.

The previous prime is 202543151411. The next prime is 202543151431. The reversal of 202543151423 is 324151345202.

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 202543151423 - 2⁴ = 202543151407 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 202543151423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202543154423) 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, 621297848 + ... + 621298173.

It is an arithmetic number, because the mean of its divisors is an integer number (50946436902).

Almost surely, 2^202543151423 is an apocalyptic number.

202543151423 is a deficient number, since it is larger than the sum of its proper divisors (1242596185).

202543151423 is a wasteful number, since it uses less digits than its factorization.

202543151423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242596184.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 202543151423 its reverse (324151345202), we get a palindrome (526694496625).

The spelling of 202543151423 in words is "two hundred two billion, five hundred forty-three million, one hundred fifty-one thousand, four hundred twenty-three".