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31082103155 = 57385156447
BaseRepresentation
bin11100111100101000…
…110100000101110011
32222020011110102211202
4130330220310011303
51002124004300110
622140125201415
72150146342355
oct347450640563
988204412752
1031082103155
1112200045164
12603540026b
132c1461aa1c
14170c0490d5
15c1db270a5
hex73ca34173

31082103155 has 8 divisors (see below), whose sum is σ = 37809462912. Its totient is φ = 24525056448.

The previous prime is 31082103149. The next prime is 31082103161. The reversal of 31082103155 is 55130128013.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31082103149) and next prime (31082103161).

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 31082103155 - 210 = 31082102131 is a prime.

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, 42577859 + ... + 42578588.

It is an arithmetic number, because the mean of its divisors is an integer number (4726182864).

Almost surely, 231082103155 is an apocalyptic number.

31082103155 is a deficient number, since it is larger than the sum of its proper divisors (6727359757).

31082103155 is an equidigital number, since it uses as much as digits as its factorization.

31082103155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85156525.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 31082103155 in words is "thirty-one billion, eighty-two million, one hundred three thousand, one hundred fifty-five".

Divisors: 1 5 73 365 85156447 425782235 6216420631 31082103155