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312431442130 = 2531243144213
BaseRepresentation
bin1001000101111100101…
…11010111100011010010
31002212102212212201102201
410202332113113203102
520104324422122010
6355310134033414
731400225304013
oct4427627274322
91085385781381
10312431442130
11110557449815
12506747a886a
1323601493222
141119c18b00a
1581d8c5423a
hex48be5d78d2

312431442130 has 8 divisors (see below), whose sum is σ = 562376595852. Its totient is φ = 124972576848.

The previous prime is 312431442119. The next prime is 312431442161. The reversal of 312431442130 is 31244134213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 302705734969 + 9725707161 = 550187^2 + 98619^2 .

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

It is a super-2 number, since 2×3124314421302 (a number of 24 digits) contains 22 as substring.

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, 15621572097 + ... + 15621572116.

Almost surely, 2312431442130 is an apocalyptic number.

312431442130 is a deficient number, since it is larger than the sum of its proper divisors (249945153722).

312431442130 is a wasteful number, since it uses less digits than its factorization.

312431442130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31243144220.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 312431442130 its reverse (31244134213), we get a palindrome (343675576343).

The spelling of 312431442130 in words is "three hundred twelve billion, four hundred thirty-one million, four hundred forty-two thousand, one hundred thirty".

Divisors: 1 2 5 10 31243144213 62486288426 156215721065 312431442130