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1312104320430 = 23543736810681
BaseRepresentation
bin10011000101111111100…
…000110000110110101110
311122102202210202122022020
4103011333200300312232
5132444142201223210
62442434501131010
7163540111463331
oct23057740606656
94572683678266
101312104320430
114665077562a2
121923650b9a66
1396966a56117
1447712da0618
15241e6900770
hex1317f830dae

1312104320430 has 16 divisors (see below), whose sum is σ = 3149050369104. Its totient is φ = 349894485440.

The previous prime is 1312104320419. The next prime is 1312104320431. The reversal of 1312104320430 is 340234012131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312104320430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312104320431) 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, 21868405311 + ... + 21868405370.

It is an arithmetic number, because the mean of its divisors is an integer number (196815648069).

Almost surely, 21312104320430 is an apocalyptic number.

1312104320430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312104320430 is an abundant number, since it is smaller than the sum of its proper divisors (1836946048674).

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

1312104320430 is a wasteful number, since it uses less digits than its factorization.

1312104320430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43736810691.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1312104320430 its reverse (340234012131), we get a palindrome (1652338332561).

The spelling of 1312104320430 in words is "one trillion, three hundred twelve billion, one hundred four million, three hundred twenty thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 43736810681 87473621362 131210432043 218684053405 262420864086 437368106810 656052160215 1312104320430