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31200112023 = 312517830873
BaseRepresentation
bin11101000011101010…
…111110110110010111
32222112101111220120120
4131003222332312113
51002344212041043
622155542403023
72153111401503
oct350352766627
988471456516
1031200112023
1112260716a53
126068a30473
132c32bc8562
14171d9a7303
15c29187983
hex743abed97

31200112023 has 8 divisors (see below), whose sum is σ = 41603522928. Its totient is φ = 20798387904.

The previous prime is 31200112003. The next prime is 31200112039. The reversal of 31200112023 is 32021100213.

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

It is not a de Polignac number, because 31200112023 - 26 = 31200111959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31200111993 and 31200112011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200112003) 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, 377886 + ... + 452987.

It is an arithmetic number, because the mean of its divisors is an integer number (5200440366).

Almost surely, 231200112023 is an apocalyptic number.

31200112023 is a deficient number, since it is larger than the sum of its proper divisors (10403410905).

31200112023 is a wasteful number, since it uses less digits than its factorization.

31200112023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843393.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31200112023 its reverse (32021100213), we get a palindrome (63221212236).

The spelling of 31200112023 in words is "thirty-one billion, two hundred million, one hundred twelve thousand, twenty-three".

Divisors: 1 3 12517 37551 830873 2492619 10400037341 31200112023