202540254631 has 32 divisors (see below), whose sum is σ = 245700274176. Its totient is φ = 164430864000.

The previous prime is 202540254599. The next prime is 202540254661. The reversal of 202540254631 is 136452045202.

202540254631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202540254631 - 2⁵ = 202540254599 is a prime.

It is a super-2 number, since 2×202540254631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202540254661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23166921 + ... + 23175661.

It is an arithmetic number, because the mean of its divisors is an integer number (7678133568).

Almost surely, 2^202540254631 is an apocalyptic number.

202540254631 is a deficient number, since it is larger than the sum of its proper divisors (43160019545).

202540254631 is a wasteful number, since it uses less digits than its factorization.

202540254631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14023.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 202540254631 its reverse (136452045202), we get a palindrome (338992299833).

The spelling of 202540254631 in words is "two hundred two billion, five hundred forty million, two hundred fifty-four thousand, six hundred thirty-one".