23131343402340 has 48 divisors (see below), whose sum is σ = 64772827217280. Its totient is φ = 6167875793920.

The previous prime is 23131343402317. The next prime is 23131343402347. The reversal of 23131343402340 is 4320434313132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23131343402347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14302605 + ... + 15837524.

It is an arithmetic number, because the mean of its divisors is an integer number (1349433900360).

Almost surely, 2^{23131343402340} is an apocalyptic number.

23131343402340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131343402340 is an abundant number, since it is smaller than the sum of its proper divisors (41641483814940).

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

23131343402340 is a wasteful number, since it uses less digits than its factorization.

23131343402340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30152932 (or 30152930 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 23131343402340 its reverse (4320434313132), we get a palindrome (27451777715472).

The spelling of 23131343402340 in words is "twenty-three trillion, one hundred thirty-one billion, three hundred forty-three million, four hundred two thousand, three hundred forty".