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131000757 = 3374632549
BaseRepresentation
bin1111100111011…
…10100110110101
3100010111112020220
413303232212311
5232014011012
620555444553
73150326256
oct763564665
9303445226
10131000757
1167a45898
1237a56759
13211a9154
1413580b2d
15b77a08c
hex7cee9b5

131000757 has 16 divisors (see below), whose sum is σ = 179846400. Its totient is φ = 84756672.

The previous prime is 131000719. The next prime is 131000767. The reversal of 131000757 is 757000131.

It is not a de Polignac number, because 131000757 - 210 = 130999733 is a prime.

It is a super-2 number, since 2×1310007572 = 34322396669146098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000767) 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, 50119 + ... + 52667.

It is an arithmetic number, because the mean of its divisors is an integer number (11240400).

Almost surely, 2131000757 is an apocalyptic number.

It is an amenable number.

131000757 is a deficient number, since it is larger than the sum of its proper divisors (48845643).

131000757 is a wasteful number, since it uses less digits than its factorization.

131000757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052.

The product of its (nonzero) digits is 735, while the sum is 24.

The square root of 131000757 is about 11445.5562119104. The cubic root of 131000757 is about 507.8762860852.

Adding to 131000757 its reverse (757000131), we get a palindrome (888000888).

The spelling of 131000757 in words is "one hundred thirty-one million, seven hundred fifty-seven", and thus it is an aban number.

Divisors: 1 3 37 111 463 1389 2549 7647 17131 51393 94313 282939 1180187 3540561 43666919 131000757