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20343461731 = 311315009471
BaseRepresentation
bin10010111100100100…
…001001011101100011
31221111202210221011121
4102330210021131203
5313130411233411
613202354553111
71320062400025
oct227444113543
957452727147
1020343461731
11869a39899a
123b38b98797
131bc28b1b28
14dadb70015
157e0eb2571
hex4bc909763

20343461731 has 8 divisors (see below), whose sum is σ = 21160009728. Its totient is φ = 19536933000.

The previous prime is 20343461729. The next prime is 20343461771. The reversal of 20343461731 is 13716434302.

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 20343461731 - 21 = 20343461729 is a prime.

It is a super-2 number, since 2×203434617312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20343461701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500675 + ... + 2508796.

It is an arithmetic number, because the mean of its divisors is an integer number (2645001216).

Almost surely, 220343461731 is an apocalyptic number.

20343461731 is a deficient number, since it is larger than the sum of its proper divisors (816547997).

20343461731 is a wasteful number, since it uses less digits than its factorization.

20343461731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009633.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 20343461731 in words is "twenty billion, three hundred forty-three million, four hundred sixty-one thousand, seven hundred thirty-one".

Divisors: 1 31 131 4061 5009471 155293601 656240701 20343461731