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30231301031 = 103293507777
BaseRepresentation
bin11100001001111011…
…010000101110100111
32220000212112012201222
4130021323100232213
5443403203113111
621515453410555
72120105550611
oct341173205647
986025465658
1030231301031
1111903865a08
125a38499a5b
132b0a28b609
14166b057db1
15bbe0b77db
hex709ed0ba7

30231301031 has 4 divisors (see below), whose sum is σ = 30524808912. Its totient is φ = 29937793152.

The previous prime is 30231301027. The next prime is 30231301073. The reversal of 30231301031 is 13010313203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30231301031 - 22 = 30231301027 is a prime.

It is a super-2 number, since 2×302313010312 (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 (30231301531) 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 3 ways as a sum of consecutive naturals, for example, 146753786 + ... + 146753991.

It is an arithmetic number, because the mean of its divisors is an integer number (7631202228).

Almost surely, 230231301031 is an apocalyptic number.

30231301031 is a deficient number, since it is larger than the sum of its proper divisors (293507881).

30231301031 is a wasteful number, since it uses less digits than its factorization.

30231301031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293507880.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30231301031 its reverse (13010313203), we get a palindrome (43241614234).

The spelling of 30231301031 in words is "thirty billion, two hundred thirty-one million, three hundred one thousand, thirty-one".

Divisors: 1 103 293507777 30231301031