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30252631231 = 17191392832381
BaseRepresentation
bin11100001011001100…
…101000010010111111
32220002100122220021101
4130023030220102333
5443424133144411
621521534513531
72120455060024
oct341314502277
986070586241
1030252631231
1111914904679
125a436658a7
132b11819334
14166dc0b54b
15bc0dcc8c1
hex70b3284bf

30252631231 has 32 divisors (see below), whose sum is σ = 34094995200. Its totient is φ = 26674583040.

The previous prime is 30252631219. The next prime is 30252631237. The reversal of 30252631231 is 13213625203.

It is not a de Polignac number, because 30252631231 - 27 = 30252631103 is a prime.

It is a super-2 number, since 2×302526312312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30252631231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30252631237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12704661 + ... + 12707041.

It is an arithmetic number, because the mean of its divisors is an integer number (1065468600).

Almost surely, 230252631231 is an apocalyptic number.

30252631231 is a deficient number, since it is larger than the sum of its proper divisors (3842363969).

30252631231 is a wasteful number, since it uses less digits than its factorization.

30252631231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 30252631231 in words is "thirty billion, two hundred fifty-two million, six hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 17 19 139 283 323 2363 2381 2641 4811 5377 39337 40477 44897 45239 91409 330959 668729 673823 747403 769063 5626303 6288221 11454991 12705851 12802637 93661397 106899757 217644829 1592243749 1779566543 30252631231