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31142003389 = 711633825329
BaseRepresentation
bin11101000000001101…
…010100001010111101
32222101100011200111221
4131000031110022331
51002234323102024
622150105113341
72151504442540
oct350015241275
988340150457
1031142003389
1112230938092
126051488851
132c23b61453
141715d9c857
15c2400a3e4
hex7403542bd

31142003389 has 8 divisors (see below), whose sum is σ = 35621472960. Its totient is φ = 26670186816.

The previous prime is 31142003369. The next prime is 31142003449. The reversal of 31142003389 is 98330024113.

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

It is not a de Polignac number, because 31142003389 - 213 = 31141995197 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 (31142003329) 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, 1904524 + ... + 1920805.

It is an arithmetic number, because the mean of its divisors is an integer number (4452684120).

Almost surely, 231142003389 is an apocalyptic number.

It is an amenable number.

31142003389 is a deficient number, since it is larger than the sum of its proper divisors (4479469571).

31142003389 is a wasteful number, since it uses less digits than its factorization.

31142003389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3826499.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 31142003389 in words is "thirty-one billion, one hundred forty-two million, three thousand, three hundred eighty-nine".

Divisors: 1 7 1163 8141 3825329 26777303 4448857627 31142003389