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613053931 = 7131668543
BaseRepresentation
bin100100100010100…
…111010111101011
31120201120100220011
4210202213113223
52223420211211
6140455512351
721122605150
oct4442472753
91521510804
10613053931
11295064546
121513886b7
139a019509
145b5c4227
1538c4a921
hex248a75eb

613053931 has 8 divisors (see below), whose sum is σ = 705982464. Its totient is φ = 521462760.

The previous prime is 613053913. The next prime is 613053977. The reversal of 613053931 is 139350316.

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

It is not a de Polignac number, because 613053931 - 25 = 613053899 is a prime.

It is a super-2 number, since 2×6130539312 = 751670244629105522, 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 = 613053893 and 613053902.

It is not an unprimeable number, because it can be changed into a prime (613053911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333355 + ... + 335188.

It is an arithmetic number, because the mean of its divisors is an integer number (88247808).

Almost surely, 2613053931 is an apocalyptic number.

613053931 is a deficient number, since it is larger than the sum of its proper divisors (92928533).

613053931 is a wasteful number, since it uses less digits than its factorization.

613053931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668681.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 613053931 is about 24759.9259086129. The cubic root of 613053931 is about 849.5055629654.

The spelling of 613053931 in words is "six hundred thirteen million, fifty-three thousand, nine hundred thirty-one".

Divisors: 1 7 131 917 668543 4679801 87579133 613053931