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231030020023 = 1182925335017
BaseRepresentation
bin1101011100101001110…
…1100101011110110111
3211002022212202000201021
43113022131211132313
512241122141120043
6254044515042011
722456065524455
oct3271235453667
9732285660637
10231030020023
1189a85472550
12389375a0307
1318a2ac0257a
14b27924d9d5
15602270e3ed
hex35ca7657b7

231030020023 has 8 divisors (see below), whose sum is σ = 252336779280. Its totient is φ = 209773932480.

The previous prime is 231030019967. The next prime is 231030020057. The reversal of 231030020023 is 320020030132.

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 231030020023 - 217 = 231029888951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231030019979 and 231030020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231030026023) 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, 12658390 + ... + 12676627.

It is an arithmetic number, because the mean of its divisors is an integer number (31542097410).

Almost surely, 2231030020023 is an apocalyptic number.

231030020023 is a deficient number, since it is larger than the sum of its proper divisors (21306759257).

231030020023 is a wasteful number, since it uses less digits than its factorization.

231030020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25335857.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 231030020023 its reverse (320020030132), we get a palindrome (551050050155).

The spelling of 231030020023 in words is "two hundred thirty-one billion, thirty million, twenty thousand, twenty-three".

Divisors: 1 11 829 9119 25335017 278685187 21002729093 231030020023