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23121301112310 = 2351378495590973
BaseRepresentation
bin1010100000111010110001…
…11100001000010111110110
310000212101010020011202011010
411100131120330020113312
511012304411041043220
6121101440141253050
74604313252513522
oct520353074102766
9100771106152133
1023121301112310
117404763785865
122715090b64186
13cb943873532b
1459d1111cad82
152a16888e01e0
hex150758f085f6

23121301112310 has 32 divisors (see below), whose sum is σ = 55491535144800. Its totient is φ = 6165634466048.

The previous prime is 23121301112297. The next prime is 23121301112317. The reversal of 23121301112310 is 1321110312132.

It is a super-5 number, since 5×231213011123105 (a number of 68 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121301112317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339984 + ... + 6930956.

It is an arithmetic number, because the mean of its divisors is an integer number (1734110473275).

Almost surely, 223121301112310 is an apocalyptic number.

23121301112310 is an abundant number, since it is smaller than the sum of its proper divisors (32370234032490).

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

23121301112310 is a wasteful number, since it uses less digits than its factorization.

23121301112310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728832.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 23121301112310 its reverse (1321110312132), we get a palindrome (24442411424442).

The spelling of 23121301112310 in words is "twenty-three trillion, one hundred twenty-one billion, three hundred one million, one hundred twelve thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 137849 275698 413547 689245 827094 1378490 2067735 4135470 5590973 11181946 16772919 27954865 33545838 55909730 83864595 167729190 770710037077 1541420074154 2312130111231 3853550185385 4624260222462 7707100370770 11560650556155 23121301112310