231154500340 has 24 divisors (see below), whose sum is σ = 491272941600. Its totient is φ = 91347801888.

The previous prime is 231154500293. The next prime is 231154500361. The reversal of 231154500340 is 43005451132.

It is a junction number, because it is equal to n+sod(n) for n = 231154500299 and 231154500308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69623190 + ... + 69626509.

It is an arithmetic number, because the mean of its divisors is an integer number (20469705900).

Almost surely, 2^231154500340 is an apocalyptic number.

231154500340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231154500340 is an abundant number, since it is smaller than the sum of its proper divisors (260118441260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231154500340 is a wasteful number, since it uses less digits than its factorization.

231154500340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139249791 (or 139249789 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 231154500340 its reverse (43005451132), we get a palindrome (274159951472).

The spelling of 231154500340 in words is "two hundred thirty-one billion, one hundred fifty-four million, five hundred thousand, three hundred forty".