23123212002 has 96 divisors (see below), whose sum is σ = 59515560000. Its totient is φ = 6409307520.

The previous prime is 23123211971. The next prime is 23123212043. The reversal of 23123212002 is 20021232132.

23123212002 is a `hidden beast` number, since 231 + 232 + 1 + 200 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3124 + ... + 215072.

It is an arithmetic number, because the mean of its divisors is an integer number (619953750).

Almost surely, 2^23123212002 is an apocalyptic number.

23123212002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 23123212002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29757780000).

23123212002 is an abundant number, since it is smaller than the sum of its proper divisors (36392347998).

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

23123212002 is a wasteful number, since it uses less digits than its factorization.

23123212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212016 (or 212013 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23123212002 its reverse (20021232132), we get a palindrome (43144444134).

The spelling of 23123212002 in words is "twenty-three billion, one hundred twenty-three million, two hundred twelve thousand, two".