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131310023 = 1317594163
BaseRepresentation
bin1111101001110…
…10000111000111
3100011002020111012
413310322013013
5232103410043
621010232435
73153055025
oct764720707
9304066435
10131310023
1168137189
1237b8571b
1321286b50
1413621715
15b7dba18
hex7d3a1c7

131310023 has 8 divisors (see below), whose sum is σ = 149729328. Its totient is φ = 114079104.

The previous prime is 131309993. The next prime is 131310043. The reversal of 131310023 is 320013131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131310023 - 210 = 131308999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131310043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296861 + ... + 297302.

It is an arithmetic number, because the mean of its divisors is an integer number (18716166).

Almost surely, 2131310023 is an apocalyptic number.

131310023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131310023 is a deficient number, since it is larger than the sum of its proper divisors (18419305).

131310023 is a wasteful number, since it uses less digits than its factorization.

131310023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594193.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 131310023 is about 11459.0585564435. The cubic root of 131310023 is about 508.2756360087.

Adding to 131310023 its reverse (320013131), we get a palindrome (451323154).

The spelling of 131310023 in words is "one hundred thirty-one million, three hundred ten thousand, twenty-three".

Divisors: 1 13 17 221 594163 7724119 10100771 131310023