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125330431 = 2915727527
BaseRepresentation
bin1110111100001…
…10001111111111
322201211110000211
413132012033333
5224041033211
620234133251
73051201562
oct736061777
9281743024
10125330431
1164822676
1235b81227
131cc72225
14129064d9
15b009e21
hex77863ff

125330431 has 8 divisors (see below), whose sum is σ = 130482720. Its totient is φ = 120233568.

The previous prime is 125330411. The next prime is 125330449. The reversal of 125330431 is 134033521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-125330431 is a prime.

It is a super-2 number, since 2×1253304312 = 31415433869291522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125330411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9211 + ... + 18316.

It is an arithmetic number, because the mean of its divisors is an integer number (16310340).

Almost surely, 2125330431 is an apocalyptic number.

125330431 is a deficient number, since it is larger than the sum of its proper divisors (5152289).

125330431 is a wasteful number, since it uses less digits than its factorization.

125330431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27713.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 125330431 is about 11195.1074581712. The cubic root of 125330431 is about 500.4401870237.

Adding to 125330431 its reverse (134033521), we get a palindrome (259363952).

It can be divided in two parts, 1253 and 30431, that added together give a square (31684 = 1782).

The spelling of 125330431 in words is "one hundred twenty-five million, three hundred thirty thousand, four hundred thirty-one".

Divisors: 1 29 157 4553 27527 798283 4321739 125330431