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31404245127 = 333765347569
BaseRepresentation
bin11101001111110101…
…101100000010000111
310000001121121221112220
4131033311230002013
51003303441321002
622232113543423
72161140451653
oct351765540207
9100047557486
1031404245127
11123559721a2
126105274b73
132c6629bb88
14173cb43a63
15c3c05b7bc
hex74fd6c087

31404245127 has 16 divisors (see below), whose sum is σ = 42061774560. Its totient is φ = 20841633792.

The previous prime is 31404245113. The next prime is 31404245219. The reversal of 31404245127 is 72154240413.

It is not a de Polignac number, because 31404245127 - 216 = 31404179591 is a prime.

It is a super-2 number, since 2×314042451272 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404245107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636399 + ... + 683967.

It is an arithmetic number, because the mean of its divisors is an integer number (2628860910).

Almost surely, 231404245127 is an apocalyptic number.

31404245127 is a deficient number, since it is larger than the sum of its proper divisors (10657529433).

31404245127 is a wasteful number, since it uses less digits than its factorization.

31404245127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48562.

The product of its (nonzero) digits is 26880, while the sum is 33.

The spelling of 31404245127 in words is "thirty-one billion, four hundred four million, two hundred forty-five thousand, one hundred twenty-seven".

Divisors: 1 3 337 653 1011 1959 47569 142707 220061 660183 16030753 31062557 48092259 93187671 10468081709 31404245127