23111022402 has 96 divisors (see below), whose sum is σ = 57150842112. Its totient is φ = 6686572032.

The previous prime is 23111022397. The next prime is 23111022421. The reversal of 23111022402 is 20422011132.

It is a happy number.

23111022402 is a `hidden beast` number, since 231 + 1 + 10 + 22 + 402 = 666.

23111022402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 5913333 + ... + 5917239.

It is an arithmetic number, because the mean of its divisors is an integer number (595321272).

Almost surely, 2^23111022402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23111022402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28575421056).

23111022402 is an abundant number, since it is smaller than the sum of its proper divisors (34039819710).

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

23111022402 is a wasteful number, since it uses less digits than its factorization.

23111022402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432 (or 5429 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 23111022402 its reverse (20422011132), we get a palindrome (43533033534).

The spelling of 23111022402 in words is "twenty-three billion, one hundred eleven million, twenty-two thousand, four hundred two".