Search a number
-
+
23031212130 = 2325475444731
BaseRepresentation
bin10101011100110001…
…000110100001100010
32012110002021210120200
4111130301012201202
5334131442242010
614325210450030
71443510034023
oct253461064142
965402253520
1023031212130
119849578613
124569133916
132230699a94
141186ad4c4a
158ebe27cc0
hex55cc46862

23031212130 has 48 divisors (see below), whose sum is σ = 61155229824. Its totient is φ = 6010981920.

The previous prime is 23031212101. The next prime is 23031212167. The reversal of 23031212130 is 3121213032.

23031212130 is a `hidden beast` number, since 230 + 312 + 121 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2718136 + ... + 2726595.

It is an arithmetic number, because the mean of its divisors is an integer number (1274067288).

Almost surely, 223031212130 is an apocalyptic number.

23031212130 is an abundant number, since it is smaller than the sum of its proper divisors (38124017694).

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

23031212130 is a wasteful number, since it uses less digits than its factorization.

23031212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444791 (or 5444788 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23031212130 its reverse (3121213032), we get a palindrome (26152425162).

The spelling of 23031212130 in words is "twenty-three billion, thirty-one million, two hundred twelve thousand, one hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 47 90 94 141 235 282 423 470 705 846 1410 2115 4230 5444731 10889462 16334193 27223655 32668386 49002579 54447310 81670965 98005158 163341930 245012895 255902357 490025790 511804714 767707071 1279511785 1535414142 2303121213 2559023570 3838535355 4606242426 7677070710 11515606065 23031212130