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20313001351 = 166331221247
BaseRepresentation
bin10010111010101111…
…111100110110000111
31221102122111101101101
4102322233330312013
5313100112020401
613155350040531
71316242443166
oct227257746607
957378441341
1020313001351
118684183625
123b2a949147
131bb94a8436
14da9ac13dd
157dd497101
hex4babfcd87

20313001351 has 4 divisors (see below), whose sum is σ = 20314239232. Its totient is φ = 20311763472.

The previous prime is 20313001343. The next prime is 20313001363. The reversal of 20313001351 is 15310031302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20313001351 - 23 = 20313001343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313001301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593991 + ... + 627256.

It is an arithmetic number, because the mean of its divisors is an integer number (5078559808).

Almost surely, 220313001351 is an apocalyptic number.

20313001351 is a deficient number, since it is larger than the sum of its proper divisors (1237881).

20313001351 is a wasteful number, since it uses less digits than its factorization.

20313001351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237880.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 20313001351 its reverse (15310031302), we get a palindrome (35623032653).

The spelling of 20313001351 in words is "twenty billion, three hundred thirteen million, one thousand, three hundred fifty-one".

Divisors: 1 16633 1221247 20313001351