[go: up one dir, main page]

Search a number
-
+
231152142 = 231322912941
BaseRepresentation
bin11011100011100…
…01101000001110
3121002221202010110
431301301220032
5433133332032
634534220450
75504521644
oct1561615016
9532852113
10231152142
11109530031
12654b4726
1338b73820
14229b1194
151545e7cc
hexdc71a0e

231152142 has 32 divisors (see below), whose sum is σ = 500078880. Its totient is φ = 70807680.

The previous prime is 231152107. The next prime is 231152143. The reversal of 231152142 is 241251132.

231152142 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231152143) 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, 11392 + ... + 24332.

It is an arithmetic number, because the mean of its divisors is an integer number (15627465).

Almost surely, 2231152142 is an apocalyptic number.

231152142 is an abundant number, since it is smaller than the sum of its proper divisors (268926738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231152142 is a wasteful number, since it uses less digits than its factorization.

231152142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13188.

The product of its digits is 480, while the sum is 21.

The square root of 231152142 is about 15203.6884340610. The cubic root of 231152142 is about 613.7139202814.

The spelling of 231152142 in words is "two hundred thirty-one million, one hundred fifty-two thousand, one hundred forty-two".

Divisors: 1 2 3 6 13 26 39 78 229 458 687 1374 2977 5954 8931 12941 17862 25882 38823 77646 168233 336466 504699 1009398 2963489 5926978 8890467 17780934 38525357 77050714 115576071 231152142