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2431220293 = 5345872081
BaseRepresentation
bin1001000011101001…
…0111101001000101
320021102202210021001
42100322113221011
514434343022133
61041125253301
7114151013545
oct22072275105
96242683231
102431220293
1110383a6877
1257a264231
132c98ca1b8
14190c69325
15e369187d
hex90e97a45

2431220293 has 4 divisors (see below), whose sum is σ = 2477092428. Its totient is φ = 2385348160.

The previous prime is 2431220279. The next prime is 2431220317. The reversal of 2431220293 is 3920221342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3920221342 = 21960110671.

It can be written as a sum of positive squares in 2 ways, for example, as 2017626724 + 413593569 = 44918^2 + 20337^2 .

It is a cyclic number.

It is not a de Polignac number, because 2431220293 - 25 = 2431220261 is a prime.

It is a super-2 number, since 2×24312202932 = 11821664226190011698, 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 (2431220243) 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, 22935988 + ... + 22936093.

It is an arithmetic number, because the mean of its divisors is an integer number (619273107).

Almost surely, 22431220293 is an apocalyptic number.

It is an amenable number.

2431220293 is a deficient number, since it is larger than the sum of its proper divisors (45872135).

2431220293 is an equidigital number, since it uses as much as digits as its factorization.

2431220293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45872134.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2431220293 is about 49307.4060664318. The cubic root of 2431220293 is about 1344.6464326786.

The spelling of 2431220293 in words is "two billion, four hundred thirty-one million, two hundred twenty thousand, two hundred ninety-three".

Divisors: 1 53 45872081 2431220293