51431023 has 8 divisors (see below), whose sum is σ = 58844448. Its totient is φ = 44034144.

The previous prime is 51431021. The next prime is 51431027. The reversal of 51431023 is 32013415.

51431023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51431023 - 2¹ = 51431021 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 (51431021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3465 + ... + 10717.

It is an arithmetic number, because the mean of its divisors is an integer number (7355556).

Almost surely, 2^51431023 is an apocalyptic number.

51431023 is a deficient number, since it is larger than the sum of its proper divisors (7413425).

51431023 is a wasteful number, since it uses less digits than its factorization.

51431023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51431023 is about 7171.5425816208. The cubic root of 51431023 is about 371.8847655369.

Adding to 51431023 its reverse (32013415), we get a palindrome (83444438).

The spelling of 51431023 in words is "fifty-one million, four hundred thirty-one thousand, twenty-three".