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20325027031 = 34575879383
BaseRepresentation
bin10010111011011101…
…110100110011010111
31221110111010100111221
4102323131310303113
5313111201331111
613200455511211
71316446610401
oct227335646327
957414110457
1020325027031
11868aa47701
123b32988507
131bbbb2901a
14dab531b71
157de570371
hex4bb774cd7

20325027031 has 4 divisors (see below), whose sum is σ = 20330909872. Its totient is φ = 20319144192.

The previous prime is 20325027007. The next prime is 20325027089. The reversal of 20325027031 is 13072052302.

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 20325027031 - 25 = 20325026999 is a prime.

It is a super-2 number, since 2×203250270312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20325026987 and 20325027005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20325027091) 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, 2936235 + ... + 2943148.

It is an arithmetic number, because the mean of its divisors is an integer number (5082727468).

Almost surely, 220325027031 is an apocalyptic number.

20325027031 is a deficient number, since it is larger than the sum of its proper divisors (5882841).

20325027031 is an equidigital number, since it uses as much as digits as its factorization.

20325027031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882840.

The product of its (nonzero) digits is 2520, while the sum is 25.

Adding to 20325027031 its reverse (13072052302), we get a palindrome (33397079333).

The spelling of 20325027031 in words is "twenty billion, three hundred twenty-five million, twenty-seven thousand, thirty-one".

Divisors: 1 3457 5879383 20325027031