Base | Representation |
---|---|
bin | 11100111001001111… |
… | …100010010111111101 |
3 | 2222002012021200102002 |
4 | 130321033202113331 |
5 | 1002014414122331 |
6 | 22130332312045 |
7 | 2145555245531 |
oct | 347117422775 |
9 | 88065250362 |
10 | 31025145341 |
11 | 12180981993 |
12 | 601a312625 |
13 | 2c05897688 |
14 | 170465dbc1 |
15 | c18b259cb |
hex | 7393e25fd |
31025145341 has 4 divisors (see below), whose sum is σ = 31269437952. Its totient is φ = 30780852732.
The previous prime is 31025145329. The next prime is 31025145373. The reversal of 31025145341 is 14354152013.
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: 14354152013 = 127 ⋅113024819.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-31025145341 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31025145311) 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, 122146115 + ... + 122146368.
It is an arithmetic number, because the mean of its divisors is an integer number (7817359488).
Almost surely, 231025145341 is an apocalyptic number.
It is an amenable number.
31025145341 is a deficient number, since it is larger than the sum of its proper divisors (244292611).
31025145341 is a wasteful number, since it uses less digits than its factorization.
31025145341 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 244292610.
The product of its (nonzero) digits is 7200, while the sum is 29.
Adding to 31025145341 its reverse (14354152013), we get a palindrome (45379297354).
The spelling of 31025145341 in words is "thirty-one billion, twenty-five million, one hundred forty-five thousand, three hundred forty-one".
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