23431404340340 has 48 divisors (see below), whose sum is σ = 49362964382592. Its totient is φ = 9342656217216.

The previous prime is 23431404340321. The next prime is 23431404340361. The reversal of 23431404340340 is 4304340413432.

It is a self number, because there is not a number n which added to its sum of digits gives 23431404340340.

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 in 15 ways as a sum of consecutive naturals, for example, 245608289 + ... + 245703671.

It is an arithmetic number, because the mean of its divisors is an integer number (1028395091304).

Almost surely, 2^{23431404340340} is an apocalyptic number.

23431404340340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23431404340340 is an abundant number, since it is smaller than the sum of its proper divisors (25931560042252).

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

23431404340340 is a wasteful number, since it uses less digits than its factorization.

23431404340340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134456 (or 134454 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 23431404340340 its reverse (4304340413432), we get a palindrome (27735744753772).

The spelling of 23431404340340 in words is "twenty-three trillion, four hundred thirty-one billion, four hundred four million, three hundred forty thousand, three hundred forty".