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23404342031 = 79043369731
BaseRepresentation
bin10101110011000000…
…011110101100001111
32020102002101202120122
4111303000132230033
5340413002421111
614430220135155
71455660424220
oct256300365417
966362352518
1023404342031
119a20160634
1246520974bb
13228ca90bc5
1411c04a3247
1591ea7ecdb
hex57301eb0f

23404342031 has 8 divisors (see below), whose sum is σ = 26750849664. Its totient is φ = 20058591960.

The previous prime is 23404342019. The next prime is 23404342057. The reversal of 23404342031 is 13024340432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23404342031 - 218 = 23404079887 is a prime.

It is a super-2 number, since 2×234043420312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23404342061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121565 + ... + 248166.

It is an arithmetic number, because the mean of its divisors is an integer number (3343856208).

Almost surely, 223404342031 is an apocalyptic number.

23404342031 is a deficient number, since it is larger than the sum of its proper divisors (3346507633).

23404342031 is an equidigital number, since it uses as much as digits as its factorization.

23404342031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378781.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 23404342031 its reverse (13024340432), we get a palindrome (36428682463).

The spelling of 23404342031 in words is "twenty-three billion, four hundred four million, three hundred forty-two thousand, thirty-one".

Divisors: 1 7 9043 63301 369731 2588117 3343477433 23404342031