731245542136 has 8 divisors (see below), whose sum is σ = 1371085391520. Its totient is φ = 365622771064.

The previous prime is 731245542127. The next prime is 731245542151. The reversal of 731245542136 is 631245542137.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 731245542092 and 731245542101.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 45702846376 + ... + 45702846391.

It is an arithmetic number, because the mean of its divisors is an integer number (171385673940).

Almost surely, 2^731245542136 is an apocalyptic number.

It is an amenable number.

731245542136 is a deficient number, since it is larger than the sum of its proper divisors (639839849384).

731245542136 is a wasteful number, since it uses less digits than its factorization.

731245542136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91405692773 (or 91405692769 counting only the distinct ones).

The product of its digits is 604800, while the sum is 43.

Subtracting from 731245542136 its reverse (631245542137), we obtain a palindrome (99999999999).

The spelling of 731245542136 in words is "seven hundred thirty-one billion, two hundred forty-five million, five hundred forty-two thousand, one hundred thirty-six".