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131513214 = 2373131267
BaseRepresentation
bin1111101011010…
…11101101111110
3100011110120012210
413311223231332
5232131410324
621014441250
73154562310
oct765535576
9304416183
10131513214
1168265908
1238063226
1321328491
14136757b0
15b82bd29
hex7d6bb7e

131513214 has 16 divisors (see below), whose sum is σ = 300601728. Its totient is φ = 37575192.

The previous prime is 131513197. The next prime is 131513233. The reversal of 131513214 is 412315131.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565592 + ... + 1565675.

It is an arithmetic number, because the mean of its divisors is an integer number (18787608).

Almost surely, 2131513214 is an apocalyptic number.

131513214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131513214 is an abundant number, since it is smaller than the sum of its proper divisors (169088514).

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

131513214 is a wasteful number, since it uses less digits than its factorization.

131513214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131279.

The product of its digits is 360, while the sum is 21.

The square root of 131513214 is about 11467.9210844861. The cubic root of 131513214 is about 508.5376718822.

Adding to 131513214 its reverse (412315131), we get a palindrome (543828345).

The spelling of 131513214 in words is "one hundred thirty-one million, five hundred thirteen thousand, two hundred fourteen".

Divisors: 1 2 3 6 7 14 21 42 3131267 6262534 9393801 18787602 21918869 43837738 65756607 131513214