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2421130031 = 7879307289
BaseRepresentation
bin1001000001001111…
…1000001100101111
320020201210011000122
42100103320030233
514424302130111
61040125115155
7113666160065
oct22023701457
96221704018
102421130031
111032734911
125769b8abb
132c77a6528
1418d7a0035
15e284bcdb
hex904f832f

2421130031 has 4 divisors (see below), whose sum is σ = 2421445200. Its totient is φ = 2420814864.

The previous prime is 2421130009. The next prime is 2421130067. The reversal of 2421130031 is 1300311242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300311242 = 2650155621.

It is a cyclic number.

It is not a de Polignac number, because 2421130031 - 214 = 2421113647 is a prime.

It is a super-2 number, since 2×24211300312 = 11723741254020121922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2421129991 and 2421130009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2481130031) 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, 145766 + ... + 161523.

It is an arithmetic number, because the mean of its divisors is an integer number (605361300).

Almost surely, 22421130031 is an apocalyptic number.

2421130031 is a deficient number, since it is larger than the sum of its proper divisors (315169).

2421130031 is an equidigital number, since it uses as much as digits as its factorization.

2421130031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315168.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2421130031 is about 49204.9797378273. The cubic root of 2421130031 is about 1342.7836303681.

Adding to 2421130031 its reverse (1300311242), we get a palindrome (3721441273).

The spelling of 2421130031 in words is "two billion, four hundred twenty-one million, one hundred thirty thousand, thirty-one".

Divisors: 1 7879 307289 2421130031