Search a number
-
+
115102431 = 337197619
BaseRepresentation
bin1101101110001…
…01001011011111
322000120210212000
412313011023133
5213431234211
615231013343
72565232413
oct667051337
9260523760
10115102431
1159a77184
123266a253
131ab00962
1411402d43
15a189656
hex6dc52df

115102431 has 32 divisors (see below), whose sum is σ = 174988800. Its totient is φ = 74753280.

The previous prime is 115102409. The next prime is 115102433. The reversal of 115102431 is 134201511.

It is not a de Polignac number, because 115102431 - 214 = 115086047 is a prime.

It is a super-2 number, since 2×1151024312 = 26497139244219522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115102433) 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 31 ways as a sum of consecutive naturals, for example, 185640 + ... + 186258.

It is an arithmetic number, because the mean of its divisors is an integer number (5468400).

Almost surely, 2115102431 is an apocalyptic number.

115102431 is a deficient number, since it is larger than the sum of its proper divisors (59886369).

115102431 is an equidigital number, since it uses as much as digits as its factorization.

115102431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 115102431 is about 10728.5801017656. The cubic root of 115102431 is about 486.4387517796.

Adding to 115102431 its reverse (134201511), we get a palindrome (249303942).

The spelling of 115102431 in words is "one hundred fifteen million, one hundred two thousand, four hundred thirty-one".

Divisors: 1 3 9 27 71 97 213 291 619 639 873 1857 1917 2619 5571 6887 16713 20661 43949 60043 61983 131847 180129 185949 395541 540387 1186623 1621161 4263053 12789159 38367477 115102431