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30431301213 = 388469114659
BaseRepresentation
bin11100010101110110…
…001100111001011101
32220112210212021102010
4130111312030321131
5444310403114323
621551400221433
72125054535535
oct342566147135
986483767363
1030431301213
11119a6749015
125a9346a879
132b3c845a11
14168983a4c5
15bd1921c93
hex715d8ce5d

30431301213 has 8 divisors (see below), whose sum is σ = 40575880800. Its totient is φ = 20287127888.

The previous prime is 30431301211. The next prime is 30431301217. The reversal of 30431301213 is 31210313403.

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

It is a cyclic number.

It is not a de Polignac number, because 30431301213 - 21 = 30431301211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30431301213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431301211) 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, 208078 + ... + 322736.

It is an arithmetic number, because the mean of its divisors is an integer number (5071985100).

Almost surely, 230431301213 is an apocalyptic number.

It is an amenable number.

30431301213 is a deficient number, since it is larger than the sum of its proper divisors (10144579587).

30431301213 is a wasteful number, since it uses less digits than its factorization.

30431301213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203131.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30431301213 its reverse (31210313403), we get a palindrome (61641614616).

The spelling of 30431301213 in words is "thirty billion, four hundred thirty-one million, three hundred one thousand, two hundred thirteen".

Divisors: 1 3 88469 114659 265407 343977 10143767071 30431301213