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131310142 = 2173862063
BaseRepresentation
bin1111101001110…
…10001000111110
3100011002020122121
413310322020332
5232103411032
621010233154
73153055255
oct764721076
9304066577
10131310142
1168137287
1237b857ba
1321286c12
141362179c
15b7dba97
hex7d3a23e

131310142 has 8 divisors (see below), whose sum is σ = 208551456. Its totient is φ = 61792992.

The previous prime is 131310119. The next prime is 131310187. The reversal of 131310142 is 241013131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1930998 + ... + 1931065.

It is an arithmetic number, because the mean of its divisors is an integer number (26068932).

Almost surely, 2131310142 is an apocalyptic number.

131310142 is a deficient number, since it is larger than the sum of its proper divisors (77241314).

131310142 is a wasteful number, since it uses less digits than its factorization.

131310142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862082.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131310142 is about 11459.0637488409. The cubic root of 131310142 is about 508.2757895506.

Adding to 131310142 its reverse (241013131), we get a palindrome (372323273).

The spelling of 131310142 in words is "one hundred thirty-one million, three hundred ten thousand, one hundred forty-two".

Divisors: 1 2 17 34 3862063 7724126 65655071 131310142