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131106744 = 23321820927
BaseRepresentation
bin1111101000010…
…00011110111000
3100010200220122100
413310020132320
5232030403434
621002023400
73151250256
oct764103670
9303626570
10131106744
116800848a
1237aa7b60
1321215472
14135ab5d6
15b79b699
hex7d087b8

131106744 has 24 divisors (see below), whose sum is σ = 355080960. Its totient is φ = 43702224.

The previous prime is 131106727. The next prime is 131106757. The reversal of 131106744 is 447601131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 910392 + ... + 910535.

It is an arithmetic number, because the mean of its divisors is an integer number (14795040).

Almost surely, 2131106744 is an apocalyptic number.

It is an amenable number.

131106744 is an abundant number, since it is smaller than the sum of its proper divisors (223974216).

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

131106744 is a wasteful number, since it uses less digits than its factorization.

131106744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820939 (or 1820932 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 131106744 is about 11450.1853260111. The cubic root of 131106744 is about 508.0132160159.

Adding to 131106744 its reverse (447601131), we get a palindrome (578707875).

The spelling of 131106744 in words is "one hundred thirty-one million, one hundred six thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 1820927 3641854 5462781 7283708 10925562 14567416 16388343 21851124 32776686 43702248 65553372 131106744