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30131411 = 31971981
BaseRepresentation
bin111001011110…
…0010011010011
32002200211112012
41302330103103
530203201121
62553453135
7514053452
oct162742323
962624465
1030131411
11160101a2
12a1111ab
13631ca4b
144004b99
1529a2c5b
hex1cbc4d3

30131411 has 4 divisors (see below), whose sum is σ = 31103424. Its totient is φ = 29159400.

The previous prime is 30131389. The next prime is 30131419. The reversal of 30131411 is 11413103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30131411 - 218 = 29869267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30131419) 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, 485960 + ... + 486021.

It is an arithmetic number, because the mean of its divisors is an integer number (7775856).

Almost surely, 230131411 is an apocalyptic number.

30131411 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30131411 is a deficient number, since it is larger than the sum of its proper divisors (972013).

30131411 is an equidigital number, since it uses as much as digits as its factorization.

30131411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972012.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 30131411 is about 5489.2085950527. The cubic root of 30131411 is about 311.1762836774.

Adding to 30131411 its reverse (11413103), we get a palindrome (41544514).

The spelling of 30131411 in words is "thirty million, one hundred thirty-one thousand, four hundred eleven".

Divisors: 1 31 971981 30131411