231503351357 has 4 divisors (see below), whose sum is σ = 231504853536. Its totient is φ = 231501849180.

The previous prime is 231503351341. The next prime is 231503351407. The reversal of 231503351357 is 753153305132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231503351357 - 2⁴ = 231503351341 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 231503351357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231503351257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489569 + ... + 838262.

It is an arithmetic number, because the mean of its divisors is an integer number (57876213384).

Almost surely, 2^231503351357 is an apocalyptic number.

It is an amenable number.

231503351357 is a deficient number, since it is larger than the sum of its proper divisors (1502179).

231503351357 is a wasteful number, since it uses less digits than its factorization.

231503351357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502178.

The product of its (nonzero) digits is 141750, while the sum is 38.

Adding to 231503351357 its reverse (753153305132), we get a palindrome (984656656489).

The spelling of 231503351357 in words is "two hundred thirty-one billion, five hundred three million, three hundred fifty-one thousand, three hundred fifty-seven".