Search a number
20102313 = 3711175119
BaseRepresentation
bin100110010101…
…1110010101001
31101211022012010
41030223302221
520121233223
61554510133
7332603220
oct114536251
941738163
1020102313
1110390190
126895349
13421ab7a
142953cb7
151b71393
hex132bca9

20102313 has 32 divisors (see below), whose sum is σ = 35389440. Its totient is φ = 9826560.

The previous prime is 20102311. The next prime is 20102321. The reversal of 20102313 is 31320102.

It is a happy number.

It is not a de Polignac number, because 20102313 - 21 = 20102311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1368 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (1105920).

Almost surely, 220102313 is an apocalyptic number.

It is an amenable number.

20102313 is a deficient number, since it is larger than the sum of its proper divisors (15287127).

20102313 is a wasteful number, since it uses less digits than its factorization.

20102313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 20102313 is about 4483.5603040441. The cubic root of 20102313 is about 271.9038416225.

Adding to 20102313 its reverse (31320102), we get a palindrome (51422415).

It can be divided in two parts, 20102 and 313, that multiplied together give a palindrome (6291926).

The spelling of 20102313 in words is "twenty million, one hundred two thousand, three hundred thirteen".