Search a number
-
+
23131231012230 = 2351119312101191199
BaseRepresentation
bin1010100001001101010001…
…10011101100010110000110
310000220022202021000221001020
411100212220303230112012
511012440230114342410
6121110201341412010
74605114316334205
oct520465063542606
9100808667027036
1023131231012230
117408999970620
122716ba256a006
13cba35ba4a563
1459d7b3d0323c
152a1a6a552a70
hex1509a8cec586

23131231012230 has 768 divisors, whose sum is σ = 67208527872000. Its totient is φ = 5038070400000.

The previous prime is 23131231012189. The next prime is 23131231012247. The reversal of 23131231012230 is 3221013213132.

It is a self number, because there is not a number n which added to its sum of digits gives 23131231012230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 116237341671 + ... + 116237341869.

It is an arithmetic number, because the mean of its divisors is an integer number (87511104000).

Almost surely, 223131231012230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131231012230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33604263936000).

23131231012230 is an abundant number, since it is smaller than the sum of its proper divisors (44077296859770).

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

23131231012230 is a wasteful number, since it uses less digits than its factorization.

23131231012230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 23131231012230 its reverse (3221013213132), we get a palindrome (26352244225362).

The spelling of 23131231012230 in words is "twenty-three trillion, one hundred thirty-one billion, two hundred thirty-one million, twelve thousand, two hundred thirty".