Search a number
-
+
10310032121 = 29355518349
BaseRepresentation
bin10011001101000011…
…01001101011111001
3222121112010220020112
421212201221223321
5132103332011441
64423015434105
7513330553454
oct114641515371
928545126215
1010310032121
114410820804
121bb8985935
13c83cbb62c
146db3c849b
154051ee4eb
hex266869af9

10310032121 has 4 divisors (see below), whose sum is σ = 10665550500. Its totient is φ = 9954513744.

The previous prime is 10310032099. The next prime is 10310032151. The reversal of 10310032121 is 12123001301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12123001301 = 19163471211.

It can be written as a sum of positive squares in 2 ways, for example, as 7235884096 + 3074148025 = 85064^2 + 55445^2 .

It is a cyclic number.

It is not a de Polignac number, because 10310032121 - 210 = 10310031097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10310032096 and 10310032105.

It is not an unprimeable number, because it can be changed into a prime (10310032151) 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, 177759146 + ... + 177759203.

It is an arithmetic number, because the mean of its divisors is an integer number (2666387625).

Almost surely, 210310032121 is an apocalyptic number.

It is an amenable number.

10310032121 is a deficient number, since it is larger than the sum of its proper divisors (355518379).

10310032121 is an equidigital number, since it uses as much as digits as its factorization.

10310032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355518378.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10310032121 its reverse (12123001301), we get a palindrome (22433033422).

The spelling of 10310032121 in words is "ten billion, three hundred ten million, thirty-two thousand, one hundred twenty-one".

Divisors: 1 29 355518349 10310032121