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2122402131 = 32439537181
BaseRepresentation
bin111111010000001…
…0100100101010011
312110220200012101100
41332200110211103
513321313332011
6550334235443
7103411056213
oct17640244523
95426605340
102122402131
1199a04a153
124b2955b83
1327a932765
14161c3c243
15c64ded56
hex7e814953

2122402131 has 12 divisors (see below), whose sum is σ = 3072681040. Its totient is φ = 1411709040.

The previous prime is 2122402129. The next prime is 2122402141. The reversal of 2122402131 is 1312042212.

It is a happy number.

2122402131 is a `hidden beast` number, since 212 + 240 + 213 + 1 = 666.

It is not a de Polignac number, because 2122402131 - 21 = 2122402129 is a prime.

It is a super-2 number, since 2×21224021312 = 9009181611346682322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122402141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264640 + ... + 272541.

Almost surely, 22122402131 is an apocalyptic number.

2122402131 is a deficient number, since it is larger than the sum of its proper divisors (950278909).

2122402131 is a wasteful number, since it uses less digits than its factorization.

2122402131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537626 (or 537623 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2122402131 is about 46069.5358235787. The cubic root of 2122402131 is about 1285.1166716676.

Adding to 2122402131 its reverse (1312042212), we get a palindrome (3434444343).

The spelling of 2122402131 in words is "two billion, one hundred twenty-two million, four hundred two thousand, one hundred thirty-one".

Divisors: 1 3 9 439 1317 3951 537181 1611543 4834629 235822459 707467377 2122402131