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131000040830 = 2567433451553
BaseRepresentation
bin111101000000000110…
…1011111110101111110
3110112010121200120202002
41322000031133311332
54121242002301310
6140103001302302
712315205655201
oct1720015376576
9415117616662
10131000040830
115061412065a
122147b794992
13c479127479
1464aa227938
15361aa51da5
hex1e8035fd7e

131000040830 has 32 divisors (see below), whose sum is σ = 239872709664. Its totient is φ = 51498602496.

The previous prime is 131000040803. The next prime is 131000040841. The reversal of 131000040830 is 38040000131.

It is a happy number.

It is a super-2 number, since 2×1310000408302 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64334 + ... + 515886.

It is an arithmetic number, because the mean of its divisors is an integer number (7496022177).

Almost surely, 2131000040830 is an apocalyptic number.

131000040830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131000040830 is a deficient number, since it is larger than the sum of its proper divisors (108872668834).

131000040830 is a wasteful number, since it uses less digits than its factorization.

131000040830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452060.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131000040830 its reverse (38040000131), we get a palindrome (169040040961).

The spelling of 131000040830 in words is "one hundred thirty-one billion, forty thousand, eight hundred thirty".

Divisors: 1 2 5 10 67 134 335 433 670 866 2165 4330 29011 58022 145055 290110 451553 903106 2257765 4515530 30254051 60508102 151270255 195522449 302540510 391044898 977612245 1955224490 13100004083 26200008166 65500020415 131000040830