Search a number
-
+
30001202031 = 389821111337
BaseRepresentation
bin11011111100001101…
…100000001101101111
32212102211112222020210
4123330031200031233
5442420301431111
621440553513503
72111313003213
oct337415401557
985384488223
1030001202031
11117a5995149
125993412893
132aa16c6268
14164867c943
15ba8cb50a6
hex6fc36036f

30001202031 has 8 divisors (see below), whose sum is σ = 40002407344. Its totient is φ = 20000399040.

The previous prime is 30001201981. The next prime is 30001202051. The reversal of 30001202031 is 13020210003.

It is a happy number.

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

It is not a de Polignac number, because 30001202031 - 213 = 30001193839 is a prime.

It is a super-2 number, since 2×300012020312 (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 = 30001201998 and 30001202016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001202051) 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, 213795 + ... + 325131.

It is an arithmetic number, because the mean of its divisors is an integer number (5000300918).

Almost surely, 230001202031 is an apocalyptic number.

30001202031 is a deficient number, since it is larger than the sum of its proper divisors (10001205313).

30001202031 is a wasteful number, since it uses less digits than its factorization.

30001202031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201161.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 30001202031 its reverse (13020210003), we get a palindrome (43021412034).

The spelling of 30001202031 in words is "thirty billion, one million, two hundred two thousand, thirty-one".

Divisors: 1 3 89821 111337 269463 334011 10000400677 30001202031