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231790101 = 31934711719
BaseRepresentation
bin11011101000011…
…01011000010101
3121011011011020120
431310031120111
5433314240401
635000022153
75513116614
oct1564153025
9534134216
10231790101
11109926374
1265761959
133903800a
1422ad987b
1515538836
hexdd0d615

231790101 has 16 divisors (see below), whose sum is σ = 326284800. Its totient is φ = 145959408.

The previous prime is 231790049. The next prime is 231790109. The reversal of 231790101 is 101097132.

231790101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231790101 - 27 = 231789973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231790109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13920 + ... + 25638.

It is an arithmetic number, because the mean of its divisors is an integer number (20392800).

Almost surely, 2231790101 is an apocalyptic number.

It is an amenable number.

231790101 is a deficient number, since it is larger than the sum of its proper divisors (94494699).

231790101 is a wasteful number, since it uses less digits than its factorization.

231790101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12088.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 231790101 is about 15224.6543803135. The cubic root of 231790101 is about 614.2779999624.

The spelling of 231790101 in words is "two hundred thirty-one million, seven hundred ninety thousand, one hundred one".

Divisors: 1 3 19 57 347 1041 6593 11719 19779 35157 222661 667983 4066493 12199479 77263367 231790101