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234131131 = 1383972237
BaseRepresentation
bin11011111010010…
…00111010111011
3121022120002112101
431331020322323
5434414144011
635122124231
75542040023
oct1575107273
9538502471
10234131131
11110185203
12664b0677
1339677740
1423148a83
151584c2c1
hexdf48ebb

234131131 has 16 divisors (see below), whose sum is σ = 257925024. Its totient is φ = 211221504.

The previous prime is 234131119. The next prime is 234131159. The reversal of 234131131 is 131131432.

It is a de Polignac number, because none of the positive numbers 2k-234131131 is a prime.

It is a super-2 number, since 2×2341311312 = 109634773006678322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234131099 and 234131108.

It is not an unprimeable number, because it can be changed into a prime (234131101) 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, 103545 + ... + 105781.

It is an arithmetic number, because the mean of its divisors is an integer number (16120314).

Almost surely, 2234131131 is an apocalyptic number.

234131131 is a deficient number, since it is larger than the sum of its proper divisors (23793893).

234131131 is a wasteful number, since it uses less digits than its factorization.

234131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430.

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

The square root of 234131131 is about 15301.3440912882. The cubic root of 234131131 is about 616.3391016434.

Adding to 234131131 its reverse (131131432), we get a palindrome (365262563).

The spelling of 234131131 in words is "two hundred thirty-four million, one hundred thirty-one thousand, one hundred thirty-one".

Divisors: 1 13 83 97 1079 1261 2237 8051 29081 104663 185671 216989 2413723 2820857 18010087 234131131