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20030031222 = 234517739061
BaseRepresentation
bin10010101001111000…
…100000010101110110
31220200221001000100020
4102221320200111312
5312010141444342
613111321030010
71306235312325
oct225170402566
956627030306
1020030031222
118549480a13
123a70025306
131b72990ba6
14d802a20bc
157c36ee0ec
hex4a9e20576

20030031222 has 16 divisors (see below), whose sum is σ = 40068985392. Its totient is φ = 6675189920.

The previous prime is 20030031181. The next prime is 20030031277. The reversal of 20030031222 is 22213003002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342429 + ... + 396632.

It is an arithmetic number, because the mean of its divisors is an integer number (2504311587).

Almost surely, 220030031222 is an apocalyptic number.

20030031222 is an abundant number, since it is smaller than the sum of its proper divisors (20038954170).

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

20030031222 is a wasteful number, since it uses less digits than its factorization.

20030031222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743583.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20030031222 its reverse (22213003002), we get a palindrome (42243034224).

The spelling of 20030031222 in words is "twenty billion, thirty million, thirty-one thousand, two hundred twenty-two".

Divisors: 1 2 3 6 4517 9034 13551 27102 739061 1478122 2217183 4434366 3338338537 6676677074 10015015611 20030031222