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12495231 = 327198337
BaseRepresentation
bin101111101010…
…100101111111
3212111211020100
4233222211333
511144321411
61123452143
7211131150
oct57524577
925454210
1012495231
117064941
124227053
132786538
141933927
15116c456
hexbea97f

12495231 has 12 divisors (see below), whose sum is σ = 20627152. Its totient is φ = 7140096.

The previous prime is 12495211. The next prime is 12495253. The reversal of 12495231 is 13259421.

It is not a de Polignac number, because 12495231 - 26 = 12495167 is a prime.

It is a super-2 number, since 2×124952312 = 312261595486722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12495195 and 12495204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12495211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99106 + ... + 99231.

Almost surely, 212495231 is an apocalyptic number.

12495231 is a deficient number, since it is larger than the sum of its proper divisors (8131921).

12495231 is a wasteful number, since it uses less digits than its factorization.

12495231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198350 (or 198347 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12495231 is about 3534.8594031446. The cubic root of 12495231 is about 232.0499236102.

The spelling of 12495231 in words is "twelve million, four hundred ninety-five thousand, two hundred thirty-one".

Divisors: 1 3 7 9 21 63 198337 595011 1388359 1785033 4165077 12495231