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20202351213 = 311612192461
BaseRepresentation
bin10010110100001001…
…110110101001101101
31221010221021202221010
4102310021312221231
5312333300214323
613140354255433
71313430103062
oct226411665155
957127252833
1020202351213
118627778530
123ab9887579
131b9c5a6195
14d9911ac69
157d38dbc93
hex4b4276a6d

20202351213 has 8 divisors (see below), whose sum is σ = 29385238176. Its totient is φ = 12243849200.

The previous prime is 20202351199. The next prime is 20202351223. The reversal of 20202351213 is 31215320202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20202351213 - 25 = 20202351181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20202351213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202351223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306096198 + ... + 306096263.

It is an arithmetic number, because the mean of its divisors is an integer number (3673154772).

Almost surely, 220202351213 is an apocalyptic number.

It is an amenable number.

20202351213 is a deficient number, since it is larger than the sum of its proper divisors (9182886963).

20202351213 is a wasteful number, since it uses less digits than its factorization.

20202351213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612192475.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20202351213 its reverse (31215320202), we get a palindrome (51417671415).

The spelling of 20202351213 in words is "twenty billion, two hundred two million, three hundred fifty-one thousand, two hundred thirteen".

Divisors: 1 3 11 33 612192461 1836577383 6734117071 20202351213