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23131330000 = 245423163617
BaseRepresentation
bin10101100010101111…
…000001010111010000
32012201001200022110221
4111202233001113100
5334333110030000
614343144402424
71446134026612
oct254257012720
965631608427
1023131330000
1198a003a659
124596776414
13224835211c
141196116db2
15905b0261a
hex562bc15d0

23131330000 has 200 divisors, whose sum is σ = 58891998528. Its totient is φ = 8781696000.

The previous prime is 23131329989. The next prime is 23131330049. The reversal of 23131330000 is 3313132.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37489692 + ... + 37490308.

Almost surely, 223131330000 is an apocalyptic number.

23131330000 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 23131330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29445999264).

23131330000 is an abundant number, since it is smaller than the sum of its proper divisors (35760668528).

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

23131330000 is a wasteful number, since it uses less digits than its factorization.

23131330000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 23131330000 its reverse (3313132), we get a palindrome (23134643132).

The spelling of 23131330000 in words is "twenty-three billion, one hundred thirty-one million, three hundred thirty thousand".