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231342141 = 390785021
BaseRepresentation
bin11011100101000…
…00000000111101
3121010022101202110
431302200000331
5433210422031
634542244233
75506242612
oct1562400075
9533271673
10231342141
1110964a858
1265586679
1338c0c154
1422a20509
151549ac46
hexdca003d

231342141 has 8 divisors (see below), whose sum is σ = 308799904. Its totient is φ = 154056240.

The previous prime is 231342109. The next prime is 231342143. The reversal of 231342141 is 141243132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231342141 - 25 = 231342109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231342143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39790 + ... + 45231.

It is an arithmetic number, because the mean of its divisors is an integer number (38599988).

Almost surely, 2231342141 is an apocalyptic number.

It is an amenable number.

231342141 is a deficient number, since it is larger than the sum of its proper divisors (77457763).

231342141 is an equidigital number, since it uses as much as digits as its factorization.

231342141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85931.

The product of its digits is 576, while the sum is 21.

The square root of 231342141 is about 15209.9356014416. The cubic root of 231342141 is about 613.8820247115.

Adding to 231342141 its reverse (141243132), we get a palindrome (372585273).

Subtracting from 231342141 its reverse (141243132), we obtain a palindrome (90099009).

The spelling of 231342141 in words is "two hundred thirty-one million, three hundred forty-two thousand, one hundred forty-one".

Divisors: 1 3 907 2721 85021 255063 77114047 231342141