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31354014405 = 357242658523
BaseRepresentation
bin11101001100110110…
…000100101011000101
32222221010002221221210
4131030312010223011
51003203111430110
622223121202033
72156660503500
oct351466045305
988833087853
1031354014405
111232a5840aa
1260b0490319
132c58a6275c
1417361ca137
15c37938520
hex74cd84ac5

31354014405 has 24 divisors (see below), whose sum is σ = 58356860832. Its totient is φ = 14333263392.

The previous prime is 31354014397. The next prime is 31354014409. The reversal of 31354014405 is 50441045313.

It is not a de Polignac number, because 31354014405 - 23 = 31354014397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31354014409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21328527 + ... + 21329996.

It is an arithmetic number, because the mean of its divisors is an integer number (2431535868).

Almost surely, 231354014405 is an apocalyptic number.

31354014405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31354014405 is a deficient number, since it is larger than the sum of its proper divisors (27002846427).

31354014405 is a wasteful number, since it uses less digits than its factorization.

31354014405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42658545 (or 42658538 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 31354014405 its reverse (50441045313), we get a palindrome (81795059718).

The spelling of 31354014405 in words is "thirty-one billion, three hundred fifty-four million, fourteen thousand, four hundred five".

Divisors: 1 3 5 7 15 21 35 49 105 147 245 735 42658523 127975569 213292615 298609661 639877845 895828983 1493048305 2090267627 4479144915 6270802881 10451338135 31354014405