Search a number
-
+
20431010130 = 2352934095683
BaseRepresentation
bin10011000001110010…
…000111100101010010
31221201212112211222220
4103001302013211102
5313320314311010
613215203241510
71322204502126
oct230162074522
957655484886
1020431010130
118734855343
123b62379296
131c07a85c0b
14dbb63d586
157e8a07970
hex4c1c87952

20431010130 has 64 divisors (see below), whose sum is σ = 49330753920. Its totient is φ = 5415446016.

The previous prime is 20431010107. The next prime is 20431010143. The reversal of 20431010130 is 3101013402.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3592269 + ... + 3597951.

It is an arithmetic number, because the mean of its divisors is an integer number (770793030).

Almost surely, 220431010130 is an apocalyptic number.

20431010130 is an abundant number, since it is smaller than the sum of its proper divisors (28899743790).

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

20431010130 is a wasteful number, since it uses less digits than its factorization.

20431010130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6395.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20431010130 its reverse (3101013402), we get a palindrome (23532023532).

The spelling of 20431010130 in words is "twenty billion, four hundred thirty-one million, ten thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 293 409 586 818 879 1227 1465 1758 2045 2454 2930 4090 4395 5683 6135 8790 11366 12270 17049 28415 34098 56830 85245 119837 170490 239674 359511 599185 719022 1198370 1665119 1797555 2324347 3330238 3595110 4648694 4995357 6973041 8325595 9990714 11621735 13946082 16651190 23243470 24976785 34865205 49953570 69730410 681033671 1362067342 2043101013 3405168355 4086202026 6810336710 10215505065 20431010130