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30150211031 = 73314112701
BaseRepresentation
bin11100000101000101…
…111011010111010111
32212211012221102011122
4130011011323113113
5443221423223111
621503435354155
72115102364613
oct340505732727
985735842148
1030150211031
111187200a886
125a152b295b
132ac6539075
14166038a343
15bb6deacdb
hex70517b5d7

30150211031 has 4 divisors (see below), whose sum is σ = 30154331064. Its totient is φ = 30146091000.

The previous prime is 30150210977. The next prime is 30150211037. The reversal of 30150211031 is 13011205103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13011205103 = 131000861931.

It is a cyclic number.

It is not a de Polignac number, because 30150211031 - 214 = 30150194647 is a prime.

It is a super-2 number, since 2×301502110312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30150211037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049020 + ... + 2063681.

It is an arithmetic number, because the mean of its divisors is an integer number (7538582766).

Almost surely, 230150211031 is an apocalyptic number.

30150211031 is a deficient number, since it is larger than the sum of its proper divisors (4120033).

30150211031 is an equidigital number, since it uses as much as digits as its factorization.

30150211031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120032.

The product of its (nonzero) digits is 90, while the sum is 17.

Adding to 30150211031 its reverse (13011205103), we get a palindrome (43161416134).

The spelling of 30150211031 in words is "thirty billion, one hundred fifty million, two hundred eleven thousand, thirty-one".

Divisors: 1 7331 4112701 30150211031