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31354126145 = 523326913413
BaseRepresentation
bin11101001100110110…
…011111111101000001
32222221010022122020022
4131030312133331001
51003203124014040
622223123423225
72156661450326
oct351466377501
988833278208
1031354126145
111232a650051
1260b0524b15
132c58aa1584
141736218b4d
15c3795b6b5
hex74cd9ff41

31354126145 has 8 divisors (see below), whose sum is σ = 37786433256. Its totient is φ = 24975646336.

The previous prime is 31354126129. The next prime is 31354126183. The reversal of 31354126145 is 54162145313.

It can be written as a sum of positive squares in 4 ways, for example, as 576336049 + 30777790096 = 24007^2 + 175436^2 .

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 31354126145 - 24 = 31354126129 is a prime.

It is a super-3 number, since 3×313541261453 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13455542 + ... + 13457871.

It is an arithmetic number, because the mean of its divisors is an integer number (4723304157).

Almost surely, 231354126145 is an apocalyptic number.

It is an amenable number.

31354126145 is a deficient number, since it is larger than the sum of its proper divisors (6432307111).

31354126145 is a wasteful number, since it uses less digits than its factorization.

31354126145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26913651.

The product of its digits is 43200, while the sum is 35.

The spelling of 31354126145 in words is "thirty-one billion, three hundred fifty-four million, one hundred twenty-six thousand, one hundred forty-five".

Divisors: 1 5 233 1165 26913413 134567065 6270825229 31354126145