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103010232121 = 429723972593
BaseRepresentation
bin101111111101111100…
…0110110011100111001
3100211212221220222102021
41133323320312130321
53141431104411441
6115153334434441
710304455345306
oct1377370663471
9324787828367
10103010232121
113a760655045
1217b69b02a21
139938367394
144db2b6c0ad
152a2d6503d1
hex17fbe36739

103010232121 has 4 divisors (see below), whose sum is σ = 103034209012. Its totient is φ = 102986255232.

The previous prime is 103010232119. The next prime is 103010232179. The reversal of 103010232121 is 121232010301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121232010301 = 640071894043.

It can be written as a sum of positive squares in 2 ways, for example, as 69767826496 + 33242405625 = 264136^2 + 182325^2 .

It is a cyclic number.

It is not a de Polignac number, because 103010232121 - 21 = 103010232119 is a prime.

It is a super-2 number, since 2×1030102321212 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103010232095 and 103010232104.

It is not an unprimeable number, because it can be changed into a prime (103010232821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11982000 + ... + 11990593.

It is an arithmetic number, because the mean of its divisors is an integer number (25758552253).

Almost surely, 2103010232121 is an apocalyptic number.

It is an amenable number.

103010232121 is a deficient number, since it is larger than the sum of its proper divisors (23976891).

103010232121 is an equidigital number, since it uses as much as digits as its factorization.

103010232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23976890.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 103010232121 its reverse (121232010301), we get a palindrome (224242242422).

The spelling of 103010232121 in words is "one hundred three billion, ten million, two hundred thirty-two thousand, one hundred twenty-one".

Divisors: 1 4297 23972593 103010232121