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30030131031 = 337607445703
BaseRepresentation
bin11011111101111011…
…110110111101010111
32212111211222201101020
4123331323312331113
5443000203143111
621443505532223
72112113621265
oct337573667527
985454881336
1030030131031
1111810253a0a
1259a1044073
132aa76b4904
14164c44d435
15bab5cb906
hex6fdef6f57

30030131031 has 16 divisors (see below), whose sum is σ = 41190180864. Its totient is φ = 19446869664.

The previous prime is 30030131029. The next prime is 30030131051. The reversal of 30030131031 is 13013103003.

It is not a de Polignac number, because 30030131031 - 21 = 30030131029 is a prime.

It is a super-2 number, since 2×300301310312 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30030131031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030131051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155475 + ... + 290228.

It is an arithmetic number, because the mean of its divisors is an integer number (2574386304).

Almost surely, 230030131031 is an apocalyptic number.

30030131031 is a deficient number, since it is larger than the sum of its proper divisors (11160049833).

30030131031 is a wasteful number, since it uses less digits than its factorization.

30030131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446350.

The product of its (nonzero) digits is 81, while the sum is 15.

Adding to 30030131031 its reverse (13013103003), we get a palindrome (43043234034).

The spelling of 30030131031 in words is "thirty billion, thirty million, one hundred thirty-one thousand, thirty-one".

Divisors: 1 3 37 111 607 1821 22459 67377 445703 1337109 16491011 49473033 270541721 811625163 10010043677 30030131031