23021402340 has 192 divisors, whose sum is σ = 68845593600. Its totient is φ = 5738202624.

The previous prime is 23021402333. The next prime is 23021402429. The reversal of 23021402340 is 4320412032.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6876547 + ... + 6879893.

It is an arithmetic number, because the mean of its divisors is an integer number (358570800).

Almost surely, 2^23021402340 is an apocalyptic number.

23021402340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23021402340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34422796800).

23021402340 is an abundant number, since it is smaller than the sum of its proper divisors (45824191260).

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

23021402340 is a wasteful number, since it uses less digits than its factorization.

23021402340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514 (or 3512 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23021402340 its reverse (4320412032), we get a palindrome (27341814372).

The spelling of 23021402340 in words is "twenty-three billion, twenty-one million, four hundred two thousand, three hundred forty".