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131453031 = 3471078713
BaseRepresentation
bin1111101010111…
…01000001100111
3100011100111122210
413311131001213
5232122444111
621013254503
73154221663
oct765350147
9304314583
10131453031
1168224676
1238034433
1321306c78
141365b8a3
15b8190a6
hex7d5d067

131453031 has 16 divisors (see below), whose sum is σ = 180693504. Its totient is φ = 84959424.

The previous prime is 131453017. The next prime is 131453041. The reversal of 131453031 is 130354131.

It is not a de Polignac number, because 131453031 - 25 = 131452999 is a prime.

It is a super-2 number, since 2×1314530312 = 34559798718173922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131452989 and 131453007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131453041) 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, 10731 + ... + 19443.

It is an arithmetic number, because the mean of its divisors is an integer number (11293344).

Almost surely, 2131453031 is an apocalyptic number.

131453031 is a deficient number, since it is larger than the sum of its proper divisors (49240473).

131453031 is a wasteful number, since it uses less digits than its factorization.

131453031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8870.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 131453031 is about 11465.2968125557. The cubic root of 131453031 is about 508.4600878091.

It can be divided in two parts, 1314 and 53031, that added together give a palindrome (54345).

The spelling of 131453031 in words is "one hundred thirty-one million, four hundred fifty-three thousand, thirty-one".

Divisors: 1 3 47 107 141 321 5029 8713 15087 26139 409511 932291 1228533 2796873 43817677 131453031