51031322103 has 8 divisors (see below), whose sum is σ = 68665999600. Its totient is φ = 33708763008.

The previous prime is 51031322101. The next prime is 51031322129. The reversal of 51031322103 is 30122313015.

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

It is not a de Polignac number, because 51031322103 - 2¹ = 51031322101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51031322103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031322101) 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, 78029218 + ... + 78029871.

It is an arithmetic number, because the mean of its divisors is an integer number (8583249950).

Almost surely, 2^51031322103 is an apocalyptic number.

51031322103 is a deficient number, since it is larger than the sum of its proper divisors (17634677497).

51031322103 is a wasteful number, since it uses less digits than its factorization.

51031322103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156059201.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 51031322103 its reverse (30122313015), we get a palindrome (81153635118).

The spelling of 51031322103 in words is "fifty-one billion, thirty-one million, three hundred twenty-two thousand, one hundred three".