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30131031001 = 291453715073
BaseRepresentation
bin11100000011111100…
…110000101111011001
32212202212211222010011
4130003330300233121
5443202020443001
621501512321521
72114450352301
oct340374605731
985685758104
1030131031001
11118621aa615
125a0a9a32a1
132ac2581c36
14165b9d6601
15bb53acd51
hex703f30bd9

30131031001 has 8 divisors (see below), whose sum is σ = 31191527880. Its totient is φ = 29071967232.

The previous prime is 30131030989. The next prime is 30131031017. The reversal of 30131031001 is 10013013103.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5966017600 + 24165013401 = 77240^2 + 155451^2 .

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 30131031001 - 27 = 30131030873 is a prime.

It is a super-3 number, since 3×301310310013 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30131031031) 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 7 ways as a sum of consecutive naturals, for example, 315400 + ... + 399673.

It is an arithmetic number, because the mean of its divisors is an integer number (3898940985).

Almost surely, 230131031001 is an apocalyptic number.

It is an amenable number.

30131031001 is a deficient number, since it is larger than the sum of its proper divisors (1060496879).

30131031001 is a wasteful number, since it uses less digits than its factorization.

30131031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716555.

The product of its (nonzero) digits is 27, while the sum is 13.

Adding to 30131031001 its reverse (10013013103), we get a palindrome (40144044104).

It can be divided in two parts, 3013103 and 1001, that multiplied together give a palindrome (3016116103).

The spelling of 30131031001 in words is "thirty billion, one hundred thirty-one million, thirty-one thousand, one".

Divisors: 1 29 1453 42137 715073 20737117 1039001069 30131031001