23172334021020 has 48 divisors (see below), whose sum is σ = 64882744069248. Its totient is φ = 6179269185600.

The previous prime is 23172334021007. The next prime is 23172334021021. The reversal of 23172334021020 is 2012043327132.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23172334021021) 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, 36832095 + ... + 37455945.

It is an arithmetic number, because the mean of its divisors is an integer number (1351723834776).

Almost surely, 2^{23172334021020} is an apocalyptic number.

23172334021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23172334021020 is an abundant number, since it is smaller than the sum of its proper divisors (41710410048228).

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

23172334021020 is a wasteful number, since it uses less digits than its factorization.

23172334021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242930 (or 1242928 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

Adding to 23172334021020 its reverse (2012043327132), we get a palindrome (25184377348152).

The spelling of 23172334021020 in words is "twenty-three trillion, one hundred seventy-two billion, three hundred thirty-four million, twenty-one thousand, twenty".