23134220331420 has 192 divisors, whose sum is σ = 72265230729216. Its totient is φ = 5481577355520.

The previous prime is 23134220331389. The next prime is 23134220331427. The reversal of 23134220331420 is 2413302243132.

It is a happy number.

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 (23134220331427) 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, 22545987 + ... + 23549733.

It is an arithmetic number, because the mean of its divisors is an integer number (376381410048).

Almost surely, 2^{23134220331420} is an apocalyptic number.

23134220331420 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 23134220331420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36132615364608).

23134220331420 is an abundant number, since it is smaller than the sum of its proper divisors (49131010397796).

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

23134220331420 is a wasteful number, since it uses less digits than its factorization.

23134220331420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004560 (or 1004558 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 23134220331420 its reverse (2413302243132), we get a palindrome (25547522574552).

The spelling of 23134220331420 in words is "twenty-three trillion, one hundred thirty-four billion, two hundred twenty million, three hundred thirty-one thousand, four hundred twenty".