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1030420231 = 7114512961
BaseRepresentation
bin111101011010101…
…111011100000111
32122210220202211021
4331122233130013
54102241421411
6250125252011
734351266421
oct7532573407
92583822737
101030420231
11489710a75
12249104007
1313562b519
149abc9811
15606dea71
hex3d6af707

1030420231 has 4 divisors (see below), whose sum is σ = 1044933264. Its totient is φ = 1015907200.

The previous prime is 1030420211. The next prime is 1030420267. The reversal of 1030420231 is 1320240301.

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: 1320240301 = 10312817867.

It is a cyclic number.

It is not a de Polignac number, because 1030420231 - 229 = 493549319 is a prime.

It is a super-2 number, since 2×10304202312 = 2123531704908186722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030420211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7256410 + ... + 7256551.

It is an arithmetic number, because the mean of its divisors is an integer number (261233316).

Almost surely, 21030420231 is an apocalyptic number.

1030420231 is a deficient number, since it is larger than the sum of its proper divisors (14513033).

1030420231 is an equidigital number, since it uses as much as digits as its factorization.

1030420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14513032.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1030420231 is about 32100.1593609751. The cubic root of 1030420231 is about 1010.0389590566.

Adding to 1030420231 its reverse (1320240301), we get a palindrome (2350660532).

The spelling of 1030420231 in words is "one billion, thirty million, four hundred twenty thousand, two hundred thirty-one".

Divisors: 1 71 14512961 1030420231