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2113413031 = 11497183823
BaseRepresentation
bin111110111111000…
…0001111110100111
312110021202111122201
41331332001332213
513312013204111
6545413435331
7103241500012
oct17576017647
95407674581
102113413031
11994a6a544
124ab93bb47
13278b06072
1416097c379
15c58166c1
hex7df81fa7

2113413031 has 4 divisors (see below), whose sum is σ = 2113608352. Its totient is φ = 2113217712.

The previous prime is 2113413023. The next prime is 2113413053. The reversal of 2113413031 is 1303143112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2113413031 - 23 = 2113413023 is a prime.

It is a super-2 number, since 2×21134130312 = 8933029279201213922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113413061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80415 + ... + 103408.

It is an arithmetic number, because the mean of its divisors is an integer number (528402088).

Almost surely, 22113413031 is an apocalyptic number.

2113413031 is a deficient number, since it is larger than the sum of its proper divisors (195321).

2113413031 is a wasteful number, since it uses less digits than its factorization.

2113413031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195320.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2113413031 is about 45971.8721720141. The cubic root of 2113413031 is about 1283.2998011291.

Adding to 2113413031 its reverse (1303143112), we get a palindrome (3416556143).

The spelling of 2113413031 in words is "two billion, one hundred thirteen million, four hundred thirteen thousand, thirty-one".

Divisors: 1 11497 183823 2113413031