Search a number
-
+
10101202031 = 23439182697
BaseRepresentation
bin10010110100001010…
…00001110001101111
3222001222012020012202
421122011001301233
5131141401431111
64350155452115
7505213541414
oct113205016157
928058166182
1010101202031
114313957658
121b5aa5703b
13c4c96212b
146bb78810b
153e1bedb3b
hex25a141c6f

10101202031 has 4 divisors (see below), whose sum is σ = 10540384752. Its totient is φ = 9662019312.

The previous prime is 10101201997. The next prime is 10101202039. The reversal of 10101202031 is 13020210101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13020210101 = 23935440957.

It is a cyclic number.

It is not a de Polignac number, because 10101202031 - 218 = 10100939887 is a prime.

It is a super-2 number, since 2×101012020312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101202039) 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, 219591326 + ... + 219591371.

It is an arithmetic number, because the mean of its divisors is an integer number (2635096188).

Almost surely, 210101202031 is an apocalyptic number.

10101202031 is a deficient number, since it is larger than the sum of its proper divisors (439182721).

10101202031 is an equidigital number, since it uses as much as digits as its factorization.

10101202031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439182720.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10101202031 its reverse (13020210101), we get a palindrome (23121412132).

The spelling of 10101202031 in words is "ten billion, one hundred one million, two hundred two thousand, thirty-one".

Divisors: 1 23 439182697 10101202031