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23102397 = 324495717
BaseRepresentation
bin101100000100…
…0001110111101
31121110201112100
41120020032331
521403234042
62143055313
7400236633
oct130101675
947421470
1023102397
111204a19a
1278a1539
134a2b576
1430d5353
15206524c
hex16083bd

23102397 has 12 divisors (see below), whose sum is σ = 33450300. Its totient is φ = 15364608.

The previous prime is 23102381. The next prime is 23102399. The reversal of 23102397 is 79320132.

It can be written as a sum of positive squares in 2 ways, for example, as 13793796 + 9308601 = 3714^2 + 3051^2 .

It is not a de Polignac number, because 23102397 - 24 = 23102381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23102397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23102399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1183 + ... + 6899.

It is an arithmetic number, because the mean of its divisors is an integer number (2787525).

Almost surely, 223102397 is an apocalyptic number.

It is an amenable number.

23102397 is a deficient number, since it is larger than the sum of its proper divisors (10347903).

23102397 is a wasteful number, since it uses less digits than its factorization.

23102397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172 (or 6169 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 23102397 is about 4806.4952928303. The cubic root of 23102397 is about 284.8081072065.

The spelling of 23102397 in words is "twenty-three million, one hundred two thousand, three hundred ninety-seven".

Divisors: 1 3 9 449 1347 4041 5717 17151 51453 2566933 7700799 23102397