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23310031213 = 710744969313
BaseRepresentation
bin10101101101011000…
…101101100101101101
32020011111221021110101
4111231120231211231
5340214331444323
614413010511101
71453433665450
oct255530554555
966144837411
1023310031213
1199819a5507
124626595491
13227638caa1
1411b1b53497
15916650dad
hex56d62d96d

23310031213 has 16 divisors (see below), whose sum is σ = 26949283200. Its totient is φ = 19748929536.

The previous prime is 23310031201. The next prime is 23310031271. The reversal of 23310031213 is 31213001332.

It is not a de Polignac number, because 23310031213 - 229 = 22773160301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23370031213) 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, 301645 + ... + 370957.

It is an arithmetic number, because the mean of its divisors is an integer number (1684330200).

Almost surely, 223310031213 is an apocalyptic number.

It is an amenable number.

23310031213 is a deficient number, since it is larger than the sum of its proper divisors (3639251987).

23310031213 is a wasteful number, since it uses less digits than its factorization.

23310031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69876.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 23310031213 its reverse (31213001332), we get a palindrome (54523032545).

The spelling of 23310031213 in words is "twenty-three billion, three hundred ten million, thirty-one thousand, two hundred thirteen".

Divisors: 1 7 107 449 749 3143 48043 69313 336301 485191 7416491 31121537 51915437 217850759 3330004459 23310031213