Search a number
-
+
13020221230 = 254314616553
BaseRepresentation
bin11000010000001000…
…01100111100101110
31020121101211202202221
430020010030330232
5203131134034410
65551552305554
7640440024442
oct141004147456
936541752687
1013020221230
115581636a15
1226345422ba
1312c6631a23
148b7310822
155130e84da
hex30810cf2e

13020221230 has 32 divisors (see below), whose sum is σ = 23545323648. Its totient is φ = 5183942400.

The previous prime is 13020221209. The next prime is 13020221251. The reversal of 13020221230 is 3212202031.

It is an interprime number because it is at equal distance from previous prime (13020221209) and next prime (13020221251).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983634 + ... + 1990186.

It is an arithmetic number, because the mean of its divisors is an integer number (735791364).

Almost surely, 213020221230 is an apocalyptic number.

13020221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13020221230 is a deficient number, since it is larger than the sum of its proper divisors (10525102418).

13020221230 is a wasteful number, since it uses less digits than its factorization.

13020221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 13020221230 its reverse (3212202031), we get a palindrome (16232423261).

The spelling of 13020221230 in words is "thirteen billion, twenty million, two hundred twenty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 431 461 862 922 2155 2305 4310 4610 6553 13106 32765 65530 198691 397382 993455 1986910 2824343 3020933 5648686 6041866 14121715 15104665 28243430 30209330 1302022123 2604044246 6510110615 13020221230