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1230202131213 = 311376715037859
BaseRepresentation
bin10001111001101101110…
…000101101001100001101
311100121100220100100020210
4101321231300231030031
5130123423221144323
62341051433033033
7154610361403506
oct21715560551415
94317326310223
101230202131213
114347a9039310
1217a508255779
138c013802173
144378374bbad
1522001440293
hex11e6dc2d30d

1230202131213 has 32 divisors (see below), whose sum is σ = 1865175851520. Its totient is φ = 714599012160.

The previous prime is 1230202131203. The next prime is 1230202131217. The reversal of 1230202131213 is 3121312020321.

It is not a de Polignac number, because 1230202131213 - 210 = 1230202130189 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1230202131213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230202131217) 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, 7437123 + ... + 7600736.

It is an arithmetic number, because the mean of its divisors is an integer number (58286745360).

Almost surely, 21230202131213 is an apocalyptic number.

It is an amenable number.

1230202131213 is a deficient number, since it is larger than the sum of its proper divisors (634973720307).

1230202131213 is a wasteful number, since it uses less digits than its factorization.

1230202131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15037977.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1230202131213 its reverse (3121312020321), we get a palindrome (4351514151534).

The spelling of 1230202131213 in words is "one trillion, two hundred thirty billion, two hundred two million, one hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 3 11 33 37 67 111 201 407 737 1221 2211 2479 7437 27269 81807 15037859 45113577 165416449 496249347 556400783 1007536553 1669202349 3022609659 6120408613 11082902083 18361225839 33248706249 37278852461 111836557383 410067377071 1230202131213