51031430 has 8 divisors (see below), whose sum is σ = 91856592. Its totient is φ = 20412568.

The previous prime is 51031423. The next prime is 51031439. The reversal of 51031430 is 3413015.

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

It is a junction number, because it is equal to n+sod(n) for n = 51031399 and 51031408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031439) 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, 2551562 + ... + 2551581.

It is an arithmetic number, because the mean of its divisors is an integer number (11482074).

Almost surely, 2^51031430 is an apocalyptic number.

51031430 is a deficient number, since it is larger than the sum of its proper divisors (40825162).

51031430 is a wasteful number, since it uses less digits than its factorization.

51031430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103150.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51031430 is about 7143.6286297651. The cubic root of 51031430 is about 370.9191416406.

Adding to 51031430 its reverse (3413015), we get a palindrome (54444445).

The spelling of 51031430 in words is "fifty-one million, thirty-one thousand, four hundred thirty".