Base | Representation |
---|---|
bin | 11011111110001000… |
… | …000110101111110111 |
3 | 2212112002000211012221 |
4 | 123332020012233313 |
5 | 443002013411211 |
6 | 21444102423211 |
7 | 2112153122122 |
oct | 337610065767 |
9 | 85462024187 |
10 | 30033341431 |
11 | 11812046a35 |
12 | 59a2131b07 |
13 | 2aa8269c62 |
14 | 164ca473b9 |
15 | baba12c71 |
hex | 6fe206bf7 |
30033341431 has 4 divisors (see below), whose sum is σ = 31800008592. Its totient is φ = 28266674272.
The previous prime is 30033341423. The next prime is 30033341453. The reversal of 30033341431 is 13414333003.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13414333003 = 29 ⋅462563207.
It is a cyclic number.
It is not a de Polignac number, because 30033341431 - 23 = 30033341423 is a prime.
It is a super-2 number, since 2×300333414312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30033341396 and 30033341405.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30033345431) 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, 883333555 + ... + 883333588.
It is an arithmetic number, because the mean of its divisors is an integer number (7950002148).
Almost surely, 230033341431 is an apocalyptic number.
30033341431 is a deficient number, since it is larger than the sum of its proper divisors (1766667161).
30033341431 is a wasteful number, since it uses less digits than its factorization.
30033341431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1766667160.
The product of its (nonzero) digits is 3888, while the sum is 25.
Adding to 30033341431 its reverse (13414333003), we get a palindrome (43447674434).
The spelling of 30033341431 in words is "thirty billion, thirty-three million, three hundred forty-one thousand, four hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •