23501531040330 has 128 divisors (see below), whose sum is σ = 64824056833536. Its totient is φ = 5341558348800.

The previous prime is 23501531040283. The next prime is 23501531040331. The reversal of 23501531040330 is 3304013510532.

It is a super-2 number, since 2×23501531040330² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (23501531040331) 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, 465711300 + ... + 465761760.

It is an arithmetic number, because the mean of its divisors is an integer number (506437944012).

Almost surely, 2^{23501531040330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23501531040330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32412028416768).

23501531040330 is an abundant number, since it is smaller than the sum of its proper divisors (41322525793206).

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

23501531040330 is a wasteful number, since it uses less digits than its factorization.

23501531040330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62912.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 23501531040330 its reverse (3304013510532), we get a palindrome (26805544550862).

The spelling of 23501531040330 in words is "twenty-three trillion, five hundred one billion, five hundred thirty-one million, forty thousand, three hundred thirty".