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1030431023 = 7114513113
BaseRepresentation
bin111101011010110…
…010000100101111
32122210221022121222
4331122302010233
54102242243043
6250125413555
734351343036
oct7532620457
92583838558
101030431023
11489719096
1224910a2bb
131356333cb
149abcd71d
15606e2d68
hex3d6b212f

1030431023 has 4 divisors (see below), whose sum is σ = 1044944208. Its totient is φ = 1015917840.

The previous prime is 1030431001. The next prime is 1030431037. The reversal of 1030431023 is 3201340301.

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: 3201340301 = 4798166721.

It is a cyclic number.

It is not a de Polignac number, because 1030431023 - 26 = 1030430959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030430992 and 1030431010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030431223) 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 3 ways as a sum of consecutive naturals, for example, 7256486 + ... + 7256627.

It is an arithmetic number, because the mean of its divisors is an integer number (261236052).

Almost surely, 21030431023 is an apocalyptic number.

1030431023 is a deficient number, since it is larger than the sum of its proper divisors (14513185).

1030431023 is an equidigital number, since it uses as much as digits as its factorization.

1030431023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14513184.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1030431023 is about 32100.3274593889. The cubic root of 1030431023 is about 1010.0424852239.

Adding to 1030431023 its reverse (3201340301), we get a palindrome (4231771324).

The spelling of 1030431023 in words is "one billion, thirty million, four hundred thirty-one thousand, twenty-three".

Divisors: 1 71 14513113 1030431023