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30212401031 = 95717315643
BaseRepresentation
bin11100001000110011…
…001010011110000111
32212222112221222210222
4130020303022132013
5443333333313111
621513540334555
72116456112561
oct341063123607
985875858728
1030212401031
11118a412707a
125a320a445b
132b063a1a97
141668738331
15bbc5d27db
hex708cca787

30212401031 has 4 divisors (see below), whose sum is σ = 30212812392. Its totient is φ = 30211989672.

The previous prime is 30212401013. The next prime is 30212401039. The reversal of 30212401031 is 13010421203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13010421203 = 131000801631.

It is a cyclic number.

It is not a de Polignac number, because 30212401031 - 226 = 30145292167 is a prime.

It is a super-2 number, since 2×302124010312 (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 (30212401039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62105 + ... + 253538.

It is an arithmetic number, because the mean of its divisors is an integer number (7553203098).

Almost surely, 230212401031 is an apocalyptic number.

30212401031 is a deficient number, since it is larger than the sum of its proper divisors (411361).

30212401031 is an equidigital number, since it uses as much as digits as its factorization.

30212401031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411360.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30212401031 its reverse (13010421203), we get a palindrome (43222822234).

The spelling of 30212401031 in words is "thirty billion, two hundred twelve million, four hundred one thousand, thirty-one".

Divisors: 1 95717 315643 30212401031