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131031134 = 21337136207
BaseRepresentation
bin1111100111101…
…10000001011110
3100010120001220222
413303312001132
5232020444014
621000241342
73150513653
oct763660136
9303501828
10131031134
1167a666a3
1237a70252
13211b9c20
141358bc2a
15b78408e
hex7cf605e

131031134 has 16 divisors (see below), whose sum is σ = 217387968. Its totient is φ = 58840992.

The previous prime is 131031133. The next prime is 131031137. The reversal of 131031134 is 431130131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031133) 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, 67142 + ... + 69065.

It is an arithmetic number, because the mean of its divisors is an integer number (13586748).

Almost surely, 2131031134 is an apocalyptic number.

131031134 is a deficient number, since it is larger than the sum of its proper divisors (86356834).

131031134 is a wasteful number, since it uses less digits than its factorization.

131031134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136259.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 131031134 is about 11446.8831565628. The cubic root of 131031134 is about 507.9155392060.

Adding to 131031134 its reverse (431130131), we get a palindrome (562161265).

The spelling of 131031134 in words is "one hundred thirty-one million, thirty-one thousand, one hundred thirty-four".

Divisors: 1 2 13 26 37 74 481 962 136207 272414 1770691 3541382 5039659 10079318 65515567 131031134