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20374001131 = 1119148765557
BaseRepresentation
bin10010111110011000…
…101001010111101011
31221120220021111100111
4102332120221113223
5313211221014011
613205405315151
71320613103131
oct227630512753
957526244314
1020374001131
118705657670
123b47265ab7
131bc9015493
14db3c3d751
157e39e6121
hex4be6295eb

20374001131 has 16 divisors (see below), whose sum is σ = 23412072960. Its totient is φ = 17534918880.

The previous prime is 20374001113. The next prime is 20374001177. The reversal of 20374001131 is 13110047302.

It is a cyclic number.

It is not a de Polignac number, because 20374001131 - 25 = 20374001099 is a prime.

It is a super-2 number, since 2×203740011312 (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 (20374001111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278005 + ... + 343561.

It is an arithmetic number, because the mean of its divisors is an integer number (1463254560).

Almost surely, 220374001131 is an apocalyptic number.

20374001131 is a deficient number, since it is larger than the sum of its proper divisors (3038071829).

20374001131 is a wasteful number, since it uses less digits than its factorization.

20374001131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67074.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 20374001131 its reverse (13110047302), we get a palindrome (33484048433).

The spelling of 20374001131 in words is "twenty billion, three hundred seventy-four million, one thousand, one hundred thirty-one".

Divisors: 1 11 19 209 1487 16357 28253 65557 310783 721127 1245583 13701413 97483259 1072315849 1852181921 20374001131