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131310012 = 22310942501
BaseRepresentation
bin1111101001110…
…10000110111100
3100011002020110210
413310322012330
5232103410022
621010232420
73153055011
oct764720674
9304066423
10131310012
1168137179
1237b85710
1321286b42
1413621708
15b7dba0c
hex7d3a1bc

131310012 has 12 divisors (see below), whose sum is σ = 306390056. Its totient is φ = 43770000.

The previous prime is 131309993. The next prime is 131310043. The reversal of 131310012 is 210013131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 10942501 = 131310012 / (1 + 3 + 1 + 3 + 1 + 0 + 0 + 1 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 131310012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5471239 + ... + 5471262.

Almost surely, 2131310012 is an apocalyptic number.

131310012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131310012 is an abundant number, since it is smaller than the sum of its proper divisors (175080044).

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

131310012 is a wasteful number, since it uses less digits than its factorization.

131310012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10942508 (or 10942506 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 131310012 is about 11459.0580764738. The cubic root of 131310012 is about 508.2756218157.

Adding to 131310012 its reverse (210013131), we get a palindrome (341323143).

It can be divided in two parts, 1313 and 10012, that added together give a triangular number (11325 = T150).

The spelling of 131310012 in words is "one hundred thirty-one million, three hundred ten thousand, twelve".

Divisors: 1 2 3 4 6 12 10942501 21885002 32827503 43770004 65655006 131310012