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2013402131 = 13839719237
BaseRepresentation
bin111100000000010…
…0001010000010011
312012022120102111022
41320000201100103
513110412332011
6531442110055
7100615431026
oct17000412023
95168512438
102013402131
11943570904
1248234b32b
1326118a610
141515871bd
15bbb5d8db
hex78021413

2013402131 has 16 divisors (see below), whose sum is σ = 2217141024. Its totient is φ = 1817109504.

The previous prime is 2013402113. The next prime is 2013402133. The reversal of 2013402131 is 1312043102.

It is a cyclic number.

It is not a de Polignac number, because 2013402131 - 210 = 2013401107 is a prime.

It is a super-2 number, since 2×20134021312 = 8107576282230682322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013402133) 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, 95045 + ... + 114281.

It is an arithmetic number, because the mean of its divisors is an integer number (138571314).

Almost surely, 22013402131 is an apocalyptic number.

2013402131 is a deficient number, since it is larger than the sum of its proper divisors (203738893).

2013402131 is a wasteful number, since it uses less digits than its factorization.

2013402131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19430.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2013402131 is about 44870.9497447959. The cubic root of 2013402131 is about 1262.7290581481.

Adding to 2013402131 its reverse (1312043102), we get a palindrome (3325445233).

The spelling of 2013402131 in words is "two billion, thirteen million, four hundred two thousand, one hundred thirty-one".

Divisors: 1 13 83 97 1079 1261 8051 19237 104663 250081 1596671 1865989 20756723 24257857 154877087 2013402131