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2141344431 = 358812117
BaseRepresentation
bin111111110100010…
…0101001010101111
312112020022120100000
41333220211022233
513341141010211
6552252235343
7104031061452
oct17750451257
95466276300
102141344431
119a9807846
124b916bb53
13281835615
1416456d499
15c7ed2656
hex7fa252af

2141344431 has 12 divisors (see below), whose sum is σ = 3207610952. Its totient is φ = 1427562792.

The previous prime is 2141344423. The next prime is 2141344453. The reversal of 2141344431 is 1344431412.

2141344431 is a `hidden beast` number, since 214 + 1 + 3 + 4 + 443 + 1 = 666.

It is not a de Polignac number, because 2141344431 - 23 = 2141344423 is a prime.

It is a super-2 number, since 2×21413444312 = 9170711944349427522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2141344395 and 2141344404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141344481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4405816 + ... + 4406301.

Almost surely, 22141344431 is an apocalyptic number.

2141344431 is a deficient number, since it is larger than the sum of its proper divisors (1066266521).

2141344431 is an frugal number, since it uses more digits than its factorization.

2141344431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8812132 (or 8812120 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2141344431 is about 46274.6629485294. The cubic root of 2141344431 is about 1288.9285478502.

Adding to 2141344431 its reverse (1344431412), we get a palindrome (3485775843).

The spelling of 2141344431 in words is "two billion, one hundred forty-one million, three hundred forty-four thousand, four hundred thirty-one".

Divisors: 1 3 9 27 81 243 8812117 26436351 79309053 237927159 713781477 2141344431