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31430341 = 127263941
BaseRepresentation
bin111011111100…
…1011011000101
32012010211022201
41313321123011
531021232331
63041354501
7531103435
oct167713305
965124281
1031430341
1116818098
12a638a31
136686047
1442622c5
152b5ca61
hex1df96c5

31430341 has 8 divisors (see below), whose sum is σ = 31832064. Its totient is φ = 31031280.

The previous prime is 31430339. The next prime is 31430363. The reversal of 31430341 is 14303413.

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

It is a cyclic number.

It is not a de Polignac number, because 31430341 - 21 = 31430339 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 (31430381) 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, 32931 + ... + 33871.

It is an arithmetic number, because the mean of its divisors is an integer number (3979008).

Almost surely, 231430341 is an apocalyptic number.

It is an amenable number.

31430341 is a deficient number, since it is larger than the sum of its proper divisors (401723).

31430341 is a wasteful number, since it uses less digits than its factorization.

31430341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 31430341 is about 5606.2769285864. The cubic root of 31430341 is about 315.5850084415.

Adding to 31430341 its reverse (14303413), we get a palindrome (45733754).

The spelling of 31430341 in words is "thirty-one million, four hundred thirty thousand, three hundred forty-one".

Divisors: 1 127 263 941 33401 119507 247483 31430341