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131031033100 = 225211210829011
BaseRepresentation
bin111101000001000001…
…1101110010100001100
3110112012210000011010221
41322002003232110030
54121322421024400
6140110025441124
712316033255522
oct1720203562414
9415183004127
10131031033100
115062a669600
122148a0401a4
13c482688ca6
1464b03b4312
15361d624c1a
hex1e820ee50c

131031033100 has 54 divisors (see below), whose sum is σ = 312536115332. Its totient is φ = 47647644000.

The previous prime is 131031033083. The next prime is 131031033113. The reversal of 131031033100 is 1330130131.

It is a super-2 number, since 2×1310310331002 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5402406 + ... + 5426605.

Almost surely, 2131031033100 is an apocalyptic number.

131031033100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131031033100 is an abundant number, since it is smaller than the sum of its proper divisors (181505082232).

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

131031033100 is a wasteful number, since it uses less digits than its factorization.

131031033100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10829047 (or 10829029 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 131031033100 its reverse (1330130131), we get a palindrome (132361163231).

The spelling of 131031033100 in words is "one hundred thirty-one billion, thirty-one million, thirty-three thousand, one hundred".

Divisors: 1 2 4 5 10 11 20 22 25 44 50 55 100 110 121 220 242 275 484 550 605 1100 1210 2420 3025 6050 12100 10829011 21658022 43316044 54145055 108290110 119119121 216580220 238238242 270725275 476476484 541450550 595595605 1082901100 1191191210 1310310331 2382382420 2620620662 2977978025 5241241324 5955956050 6551551655 11911912100 13103103310 26206206620 32757758275 65515516550 131031033100