Search a number
-
+
10031012131 = 77120183123
BaseRepresentation
bin10010101011110010…
…10001100100100011
3221220002010012202211
421111321101210203
5131020414342011
64335211222551
7503402124220
oct112571214443
927802105684
1010031012131
114288276978
121b3b447a57
13c3b25804a
146b2316947
153da986b21
hex255e51923

10031012131 has 8 divisors (see below), whose sum is σ = 11625479424. Its totient is φ = 8476911240.

The previous prime is 10031012111. The next prime is 10031012143. The reversal of 10031012131 is 13121013001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10031012131 - 211 = 10031010083 is a prime.

It is a super-2 number, since 2×100310121312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10031012111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10091065 + ... + 10092058.

It is an arithmetic number, because the mean of its divisors is an integer number (1453184928).

Almost surely, 210031012131 is an apocalyptic number.

10031012131 is a deficient number, since it is larger than the sum of its proper divisors (1594467293).

10031012131 is an equidigital number, since it uses as much as digits as its factorization.

10031012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20183201.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 10031012131 its reverse (13121013001), we get a palindrome (23152025132).

The spelling of 10031012131 in words is "ten billion, thirty-one million, twelve thousand, one hundred thirty-one".

Divisors: 1 7 71 497 20183123 141281861 1433001733 10031012131