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143253131 = 7233112861
BaseRepresentation
bin10001000100111…
…01111010001011
3100222120000100112
420202131322023
5243133100011
622114224535
73356426420
oct1042357213
9328500315
10143253131
117395421a
123bb8514b
13238a8c88
141504dd47
15c89a58b
hex889de8b

143253131 has 16 divisors (see below), whose sum is σ = 171445248. Its totient is φ = 117031200.

The previous prime is 143253113. The next prime is 143253137. The reversal of 143253131 is 131352341.

143253131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 143253131 - 218 = 142990987 is a prime.

It is a super-2 number, since 2×1432531312 = 41042919082606322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143253097 and 143253106.

It is not an unprimeable number, because it can be changed into a prime (143253137) 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, 48641 + ... + 51501.

It is an arithmetic number, because the mean of its divisors is an integer number (10715328).

Almost surely, 2143253131 is an apocalyptic number.

143253131 is a deficient number, since it is larger than the sum of its proper divisors (28192117).

143253131 is a wasteful number, since it uses less digits than its factorization.

143253131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202.

The product of its digits is 1080, while the sum is 23.

The square root of 143253131 is about 11968.8400022726. The cubic root of 143253131 is about 523.2405268600.

The spelling of 143253131 in words is "one hundred forty-three million, two hundred fifty-three thousand, one hundred thirty-one".

Divisors: 1 7 23 161 311 2177 2861 7153 20027 50071 65803 460621 889771 6228397 20464733 143253131