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31232044141 = 107291888263
BaseRepresentation
bin11101000101100100…
…110010110001101101
32222121121121020012121
4131011210302301231
51002430400403031
622203043032541
72153646665164
oct350544626155
988547536177
1031232044141
1112277747031
12607766b751
132c396c8abc
141723d1a3db
15c2bd94011
hex745932c6d

31232044141 has 4 divisors (see below), whose sum is σ = 31523932512. Its totient is φ = 30940155772.

The previous prime is 31232044049. The next prime is 31232044147. The reversal of 31232044141 is 14144023213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31232044141 - 27 = 31232044013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232044147) 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, 145944025 + ... + 145944238.

It is an arithmetic number, because the mean of its divisors is an integer number (7880983128).

Almost surely, 231232044141 is an apocalyptic number.

It is an amenable number.

31232044141 is a deficient number, since it is larger than the sum of its proper divisors (291888371).

31232044141 is a wasteful number, since it uses less digits than its factorization.

31232044141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291888370.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31232044141 its reverse (14144023213), we get a palindrome (45376067354).

The spelling of 31232044141 in words is "thirty-one billion, two hundred thirty-two million, forty-four thousand, one hundred forty-one".

Divisors: 1 107 291888263 31232044141