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2113022031 = 331103220589
BaseRepresentation
bin111110111110010…
…0010100001001111
312110021000122022020
41331330202201033
513311413201111
6545401221223
7103235251041
oct17574424117
95407018266
102113022031
119948227aa
124ab791813
132789ca0c3
141608b9a91
15c578a906
hex7df2284f

2113022031 has 16 divisors (see below), whose sum is σ = 2936494080. Its totient is φ = 1349998560.

The previous prime is 2113022027. The next prime is 2113022033. The reversal of 2113022031 is 1302203112.

It is not a de Polignac number, because 2113022031 - 22 = 2113022027 is a prime.

It is a super-2 number, since 2×21130220312 = 8929724206982729922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2113022031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113022033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100716 + ... + 119873.

It is an arithmetic number, because the mean of its divisors is an integer number (183530880).

Almost surely, 22113022031 is an apocalyptic number.

2113022031 is a deficient number, since it is larger than the sum of its proper divisors (823472049).

2113022031 is a wasteful number, since it uses less digits than its factorization.

2113022031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220726.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2113022031 is about 45967.6193749470. The cubic root of 2113022031 is about 1283.2206556643.

Adding to 2113022031 its reverse (1302203112), we get a palindrome (3415225143).

The spelling of 2113022031 in words is "two billion, one hundred thirteen million, twenty-two thousand, thirty-one".

Divisors: 1 3 31 93 103 309 3193 9579 220589 661767 6838259 20514777 22720667 68162001 704340677 2113022031