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20230031999 = 157904314249
BaseRepresentation
bin10010110101110011…
…011100101001111111
31221012212101002211102
4102311303130221333
5312412342010444
613143223443315
71314214302062
oct226563345177
957185332742
1020230031999
118641364511
123b06bb653b
131ba5248648
14d9ca848d9
157d605884e
hex4b5cdca7f

20230031999 has 8 divisors (see below), whose sum is σ = 20362566000. Its totient is φ = 20097544896.

The previous prime is 20230031993. The next prime is 20230032037. The reversal of 20230031999 is 99913003202.

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 20230031999 - 232 = 15935064703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230031993) 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, 1412627 + ... + 1426875.

It is an arithmetic number, because the mean of its divisors is an integer number (2545320750).

Almost surely, 220230031999 is an apocalyptic number.

20230031999 is a deficient number, since it is larger than the sum of its proper divisors (132534001).

20230031999 is a wasteful number, since it uses less digits than its factorization.

20230031999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23449.

The product of its (nonzero) digits is 26244, while the sum is 38.

The spelling of 20230031999 in words is "twenty billion, two hundred thirty million, thirty-one thousand, nine hundred ninety-nine".

Divisors: 1 157 9043 14249 1419751 2237093 128853707 20230031999