Base | Representation |
---|---|
bin | 101010100111101… |
… | …1110011111101111 |
3 | 10200200000122102101 |
4 | 1111033132133233 |
5 | 10412102323211 |
6 | 353524235531 |
7 | 50303552215 |
oct | 12517363757 |
9 | 3620018371 |
10 | 1430120431 |
11 | 6742a1713 |
12 | 33ab3bba7 |
13 | 19a39650c |
14 | d7d12cb5 |
15 | 858445c1 |
hex | 553de7ef |
1430120431 has 4 divisors (see below), whose sum is σ = 1432284664. Its totient is φ = 1427956200.
The previous prime is 1430120423. The next prime is 1430120437. The reversal of 1430120431 is 1340210341.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1340210341 = 5021 ⋅266921.
It is a cyclic number.
It is not a de Polignac number, because 1430120431 - 23 = 1430120423 is a prime.
It is a super-2 number, since 2×14301204312 = 4090488894327251522, 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 = 1430120399 and 1430120408.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1430120437) 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, 1081125 + ... + 1082446.
It is an arithmetic number, because the mean of its divisors is an integer number (358071166).
Almost surely, 21430120431 is an apocalyptic number.
1430120431 is a deficient number, since it is larger than the sum of its proper divisors (2164233).
1430120431 is an equidigital number, since it uses as much as digits as its factorization.
1430120431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2164232.
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 1430120431 is about 37816.9331252549. The cubic root of 1430120431 is about 1126.6547975692.
Adding to 1430120431 its reverse (1340210341), we get a palindrome (2770330772).
The spelling of 1430120431 in words is "one billion, four hundred thirty million, one hundred twenty thousand, four hundred thirty-one".
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