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10031444231 = 19527970749
BaseRepresentation
bin10010101011110101…
…11011000100000111
3221220002221011111112
421111322323010013
5131021022203411
64335224355235
7503405604044
oct112572730407
927802834445
1010031444231
114288541586
121b3b615b1b
13c3b379923
146b23ca1cb
153daa1eb8b
hex255ebb107

10031444231 has 4 divisors (see below), whose sum is σ = 10559415000. Its totient is φ = 9503473464.

The previous prime is 10031444209. The next prime is 10031444233. The reversal of 10031444231 is 13244413001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13244413001 = 14998835499.

It is a cyclic number.

It is not a de Polignac number, because 10031444231 - 218 = 10031182087 is a prime.

It is a super-2 number, since 2×100314442312 (a number of 21 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 = 10031444197 and 10031444206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031444233) 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, 263985356 + ... + 263985393.

It is an arithmetic number, because the mean of its divisors is an integer number (2639853750).

Almost surely, 210031444231 is an apocalyptic number.

10031444231 is a deficient number, since it is larger than the sum of its proper divisors (527970769).

10031444231 is an equidigital number, since it uses as much as digits as its factorization.

10031444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527970768.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 10031444231 its reverse (13244413001), we get a palindrome (23275857232).

The spelling of 10031444231 in words is "ten billion, thirty-one million, four hundred forty-four thousand, two hundred thirty-one".

Divisors: 1 19 527970749 10031444231