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120881113 = 167723839
BaseRepresentation
bin1110011010001…
…11111111011001
322102110101201021
413031013333121
5221421143423
615554522441
72665321033
oct715077731
9272411637
10120881113
1162263851
1234596421
131c074cb2
14120a8c53
15a92b95d
hex7347fd9

120881113 has 4 divisors (see below), whose sum is σ = 121605120. Its totient is φ = 120157108.

The previous prime is 120881107. The next prime is 120881119. The reversal of 120881113 is 311188021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311188021 = 359866819.

It is an interprime number because it is at equal distance from previous prime (120881107) and next prime (120881119).

It is a cyclic number.

It is not a de Polignac number, because 120881113 - 217 = 120750041 is a prime.

It is a super-2 number, since 2×1208811132 = 29224486960237538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120881119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361753 + ... + 362086.

It is an arithmetic number, because the mean of its divisors is an integer number (30401280).

Almost surely, 2120881113 is an apocalyptic number.

It is an amenable number.

120881113 is a deficient number, since it is larger than the sum of its proper divisors (724007).

120881113 is an equidigital number, since it uses as much as digits as its factorization.

120881113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724006.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 120881113 is about 10994.5947174055. The cubic root of 120881113 is about 494.4467007467.

The spelling of 120881113 in words is "one hundred twenty million, eight hundred eighty-one thousand, one hundred thirteen".

Divisors: 1 167 723839 120881113