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140131201 = 720018743
BaseRepresentation
bin10000101101000…
…11101110000001
3100202200101212111
420112203232001
5241333144301
621523255321
73321044530
oct1026435601
9322611774
10140131201
1172111711
123ab1a541
1323054c92
141487a317
15c480551
hex85a3b81

140131201 has 4 divisors (see below), whose sum is σ = 160149952. Its totient is φ = 120112452.

The previous prime is 140131181. The next prime is 140131207. The reversal of 140131201 is 102131041.

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: 102131041 = 412491001.

It is a cyclic number.

It is not a de Polignac number, because 140131201 - 25 = 140131169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140131207) 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, 10009365 + ... + 10009378.

It is an arithmetic number, because the mean of its divisors is an integer number (40037488).

Almost surely, 2140131201 is an apocalyptic number.

It is an amenable number.

140131201 is a deficient number, since it is larger than the sum of its proper divisors (20018751).

140131201 is an equidigital number, since it uses as much as digits as its factorization.

140131201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20018750.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 140131201 is about 11837.7025220268. The cubic root of 140131201 is about 519.4115644030.

Adding to 140131201 its reverse (102131041), we get a palindrome (242262242).

The spelling of 140131201 in words is "one hundred forty million, one hundred thirty-one thousand, two hundred one".

Divisors: 1 7 20018743 140131201