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1312430211020 = 225312116822921
BaseRepresentation
bin10011000110010010111…
…011111011111111001100
311122110121111222121011002
4103012102323323333030
5133000324113223040
62442531102115432
7163551146504555
oct23062273737714
94573544877132
101312430211020
11466664703765
1219243627bb78
13969b941a5a6
144774439332c
1524215325a15
hex13192efbfcc

1312430211020 has 24 divisors (see below), whose sum is σ = 2845010007168. Its totient is φ = 508037500800.

The previous prime is 1312430211019. The next prime is 1312430211041. The reversal of 1312430211020 is 201120342131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1312430210983 and 1312430211001.

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, 1058410841 + ... + 1058412080.

It is an arithmetic number, because the mean of its divisors is an integer number (118542083632).

Almost surely, 21312430211020 is an apocalyptic number.

1312430211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312430211020 is an abundant number, since it is smaller than the sum of its proper divisors (1532579796148).

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

1312430211020 is a wasteful number, since it uses less digits than its factorization.

1312430211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116822961 (or 2116822959 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1312430211020 its reverse (201120342131), we get a palindrome (1513550553151).

The spelling of 1312430211020 in words is "one trillion, three hundred twelve billion, four hundred thirty million, two hundred eleven thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 2116822921 4233645842 8467291684 10584114605 21168229210 42336458420 65621510551 131243021102 262486042204 328107552755 656215105510 1312430211020