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115425431 = 11233114717
BaseRepresentation
bin1101110000101…
…00000010010111
322001012012220222
412320110002113
5214022103211
615241544555
72601046202
oct670240227
9261165828
10115425431
115a177920
12327a515b
131abb4994
1411488939
15a2001db
hex6e14097

115425431 has 16 divisors (see below), whose sum is σ = 135641088. Its totient is φ = 97125600.

The previous prime is 115425419. The next prime is 115425449. The reversal of 115425431 is 134524511.

It is a de Polignac number, because none of the positive numbers 2k-115425431 is a prime.

It is a super-2 number, since 2×1154254312 = 26646060243071522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115425431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115425451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485 + ... + 15201.

It is an arithmetic number, because the mean of its divisors is an integer number (8477568).

Almost surely, 2115425431 is an apocalyptic number.

115425431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115425431 is a deficient number, since it is larger than the sum of its proper divisors (20215657).

115425431 is a wasteful number, since it uses less digits than its factorization.

115425431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782.

The product of its digits is 2400, while the sum is 26.

The square root of 115425431 is about 10743.6228061115. The cubic root of 115425431 is about 486.8933410081.

Adding to 115425431 its reverse (134524511), we get a palindrome (249949942).

The spelling of 115425431 in words is "one hundred fifteen million, four hundred twenty-five thousand, four hundred thirty-one".

Divisors: 1 11 23 31 253 341 713 7843 14717 161887 338491 456227 3723401 5018497 10493221 115425431