51030431 has 8 divisors (see below), whose sum is σ = 51903600. Its totient is φ = 50162112.

The previous prime is 51030403. The next prime is 51030449. The reversal of 51030431 is 13403015.

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

It is a cyclic number.

It is not a de Polignac number, because 51030431 - 2⁶ = 51030367 is a prime.

It is a super-2 number, since 2×51030431² = 5208209776091522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030631) 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, 24476 + ... + 26478.

It is an arithmetic number, because the mean of its divisors is an integer number (6487950).

Almost surely, 2^51030431 is an apocalyptic number.

51030431 is a deficient number, since it is larger than the sum of its proper divisors (873169).

51030431 is a wasteful number, since it uses less digits than its factorization.

51030431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425.

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

The square root of 51030431 is about 7143.5587069751. The cubic root of 51030431 is about 370.9167212326.

Adding to 51030431 its reverse (13403015), we get a palindrome (64433446).

The spelling of 51030431 in words is "fifty-one million, thirty thousand, four hundred thirty-one".