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23431214430 = 232513109313587
BaseRepresentation
bin10101110100100110…
…111111010101011110
32020110221222000120200
4111310212333111132
5340441342330210
614433020124330
71456435015341
oct256446772536
966427860520
1023431214430
119a34345228
12465b0966a6
13229550c430
1411c3c9a458
159220dc0c0
hex5749bf55e

23431214430 has 192 divisors, whose sum is σ = 66533987520. Its totient is φ = 5686806528.

The previous prime is 23431214423. The next prime is 23431214449. The reversal of 23431214430 is 3441213432.

It is a junction number, because it is equal to n+sod(n) for n = 23431214394 and 23431214403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 39916597 + ... + 39917183.

It is an arithmetic number, because the mean of its divisors is an integer number (346531185).

Almost surely, 223431214430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23431214430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33266993760).

23431214430 is an abundant number, since it is smaller than the sum of its proper divisors (43102773090).

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

23431214430 is a wasteful number, since it uses less digits than its factorization.

23431214430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 23431214430 its reverse (3441213432), we get a palindrome (26872427862).

The spelling of 23431214430 in words is "twenty-three billion, four hundred thirty-one million, two hundred fourteen thousand, four hundred thirty".