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23131330230 = 2352351796473
BaseRepresentation
bin10101100010101111…
…000001011010110110
32012201001200022210110
4111202233001122312
5334333110031410
614343144403450
71446134030361
oct254257013266
965631608713
1023131330230
1198a003a848
124596776586
132248352268
1411961170d8
15905b02720
hex562bc16b6

23131330230 has 64 divisors (see below), whose sum is σ = 57949032960. Its totient is φ = 5898114816.

The previous prime is 23131330169. The next prime is 23131330237. The reversal of 23131330230 is 3203313132.

It is a junction number, because it is equal to n+sod(n) for n = 23131330197 and 23131330206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131330237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3570274 + ... + 3576746.

It is an arithmetic number, because the mean of its divisors is an integer number (905453640).

Almost surely, 223131330230 is an apocalyptic number.

23131330230 is an abundant number, since it is smaller than the sum of its proper divisors (34817702730).

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

23131330230 is a wasteful number, since it uses less digits than its factorization.

23131330230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11685.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 23131330230 its reverse (3203313132), we get a palindrome (26334643362).

The spelling of 23131330230 in words is "twenty-three billion, one hundred thirty-one million, three hundred thirty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 5179 6473 10358 12946 15537 19419 25895 31074 32365 38838 51790 64730 77685 97095 119117 148879 155370 194190 238234 297758 357351 446637 595585 714702 744395 893274 1191170 1488790 1786755 2233185 3573510 4466370 33523667 67047334 100571001 167618335 201142002 335236670 502855005 771044341 1005710010 1542088682 2313133023 3855221705 4626266046 7710443410 11565665115 23131330230