Base | Representation |
---|---|
bin | 111011111010… |
… | …1101100001111 |
3 | 2012010001100120 |
4 | 1313311230033 |
5 | 31020240210 |
6 | 3041200023 |
7 | 531011040 |
oct | 167655417 |
9 | 65101316 |
10 | 31415055 |
11 | 16807661 |
12 | a630013 |
13 | 667c0b9 |
14 | 425a8c7 |
15 | 2b58270 |
hex | 1df5b0f |
31415055 has 16 divisors (see below), whose sum is σ = 57444864. Its totient is φ = 14361120.
The previous prime is 31415053. The next prime is 31415071. The reversal of 31415055 is 55051413.
It is not a de Polignac number, because 31415055 - 21 = 31415053 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31415053) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149491 + ... + 149700.
It is an arithmetic number, because the mean of its divisors is an integer number (3590304).
Almost surely, 231415055 is an apocalyptic number.
31415055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.
31415055 is a deficient number, since it is larger than the sum of its proper divisors (26029809).
31415055 is a wasteful number, since it uses less digits than its factorization.
31415055 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 299206.
The product of its (nonzero) digits is 1500, while the sum is 24.
The square root of 31415055 is about 5604.9134694480. The cubic root of 31415055 is about 315.5338390455.
Adding to 31415055 its reverse (55051413), we get a palindrome (86466468).
The spelling of 31415055 in words is "thirty-one million, four hundred fifteen thousand, fifty-five".
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