23131402002330 has 128 divisors (see below), whose sum is σ = 57109072398336. Its totient is φ = 5991849158400.

The previous prime is 23131402002311. The next prime is 23131402002337. The reversal of 23131402002330 is 3320020413132.

It is a self number, because there is not a number n which added to its sum of digits gives 23131402002330.

It is not an unprimeable number, because it can be changed into a prime (23131402002337) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1971812565 + ... + 1971824295.

It is an arithmetic number, because the mean of its divisors is an integer number (446164628112).

Almost surely, 2^{23131402002330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131402002330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28554536199168).

23131402002330 is an abundant number, since it is smaller than the sum of its proper divisors (33977670396006).

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

23131402002330 is a wasteful number, since it uses less digits than its factorization.

23131402002330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14532.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 23131402002330 its reverse (3320020413132), we get a palindrome (26451422415462).

The spelling of 23131402002330 in words is "twenty-three trillion, one hundred thirty-one billion, four hundred two million, two thousand, three hundred thirty".