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51031301141 = 115144336491
BaseRepresentation
bin101111100001101100…
…111101110000010101
311212201110101200211102
4233201230331300111
51314003003114031
635235441515445
73454413621422
oct574154756025
9155643350742
1051031301141
111a707925947
129a82342b85
134a736191a2
1426816a8d49
1514da1aa7cb
hexbe1b3dc15

51031301141 has 4 divisors (see below), whose sum is σ = 51075638784. Its totient is φ = 50986963500.

The previous prime is 51031301081. The next prime is 51031301149. The reversal of 51031301141 is 14110313015.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14110313015 = 52822062603.

It is a cyclic number.

It is not a de Polignac number, because 51031301141 - 214 = 51031284757 is a prime.

It is a super-3 number, since 3×510313011413 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031301149) 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, 22167095 + ... + 22169396.

It is an arithmetic number, because the mean of its divisors is an integer number (12768909696).

Almost surely, 251031301141 is an apocalyptic number.

It is an amenable number.

51031301141 is a deficient number, since it is larger than the sum of its proper divisors (44337643).

51031301141 is a wasteful number, since it uses less digits than its factorization.

51031301141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44337642.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 51031301141 its reverse (14110313015), we get a palindrome (65141614156).

The spelling of 51031301141 in words is "fifty-one billion, thirty-one million, three hundred one thousand, one hundred forty-one".

Divisors: 1 1151 44336491 51031301141