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30031001023 = 113317838363
BaseRepresentation
bin11011111101111111…
…001011010110111111
32212111220121220210011
4123331333023112333
5443000414013043
621443540324051
72112124203562
oct337577132677
985456556704
1030031001023
1111810798611
1259a13a3627
132aa792a8ba
14164c5d84d9
15bab6ee59d
hex6fdfcb5bf

30031001023 has 8 divisors (see below), whose sum is σ = 30392371728. Its totient is φ = 29671307904.

The previous prime is 30031000997. The next prime is 30031001071. The reversal of 30031001023 is 32010013003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30031001023 - 217 = 30030869951 is a prime.

It is a super-2 number, since 2×300310010232 (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 = 30031000994 and 30031001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031001423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383361 + ... + 455002.

It is an arithmetic number, because the mean of its divisors is an integer number (3799046466).

Almost surely, 230031001023 is an apocalyptic number.

30031001023 is a deficient number, since it is larger than the sum of its proper divisors (361370705).

30031001023 is a wasteful number, since it uses less digits than its factorization.

30031001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838793.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 30031001023 its reverse (32010013003), we get a palindrome (62041014026).

The spelling of 30031001023 in words is "thirty billion, thirty-one million, one thousand, twenty-three".

Divisors: 1 113 317 35821 838363 94735019 265761071 30031001023