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31404514057 = 720832153797
BaseRepresentation
bin11101001111110110…
…101101101100001001
310000001122010121110021
4131033312231230021
51003304023422212
622232123420441
72161142652010
oct351766555411
9100048117407
1031404514057
1112356036254
126105384721
132c663643c7
14173cbb3a77
15c3c0b1307
hex74fdadb09

31404514057 has 8 divisors (see below), whose sum is σ = 35908120256. Its totient is φ = 26905219632.

The previous prime is 31404514051. The next prime is 31404514117. The reversal of 31404514057 is 75041540413.

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 31404514057 - 23 = 31404514049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31404514051) 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, 1062318 + ... + 1091479.

It is an arithmetic number, because the mean of its divisors is an integer number (4488515032).

Almost surely, 231404514057 is an apocalyptic number.

It is an amenable number.

31404514057 is a deficient number, since it is larger than the sum of its proper divisors (4503606199).

31404514057 is a wasteful number, since it uses less digits than its factorization.

31404514057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155887.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 31404514057 in words is "thirty-one billion, four hundred four million, five hundred fourteen thousand, fifty-seven".

Divisors: 1 7 2083 14581 2153797 15076579 4486359151 31404514057