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20315307401 = 471957722079
BaseRepresentation
bin10010111010111000…
…101111110110001001
31221102210211112200122
4102322320233312021
5313101204314101
613155511313025
71316301156314
oct227270576611
957383745618
1020315307401
118685509154
123b2b67b775
131bb9b04c6c
14daa12197b
157dd7a051b
hex4bae2fd89

20315307401 has 8 divisors (see below), whose sum is σ = 20749547520. Its totient is φ = 19881150688.

The previous prime is 20315307391. The next prime is 20315307413. The reversal of 20315307401 is 10470351302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20315307401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20315307421) 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, 909080 + ... + 931158.

It is an arithmetic number, because the mean of its divisors is an integer number (2593693440).

Almost surely, 220315307401 is an apocalyptic number.

It is an amenable number.

20315307401 is a deficient number, since it is larger than the sum of its proper divisors (434240119).

20315307401 is a wasteful number, since it uses less digits than its factorization.

20315307401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41703.

The product of its (nonzero) digits is 2520, while the sum is 26.

Adding to 20315307401 its reverse (10470351302), we get a palindrome (30785658703).

The spelling of 20315307401 in words is "twenty billion, three hundred fifteen million, three hundred seven thousand, four hundred one".

Divisors: 1 47 19577 22079 920119 1037713 432240583 20315307401