51313023 has 12 divisors (see below), whose sum is σ = 77341680. Its totient is φ = 32721216.

The previous prime is 51313013. The next prime is 51313033. The reversal of 51313023 is 32031315.

51313023 is a `hidden beast` number, since 513 + 130 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (51313013) and next prime (51313033).

It is not a de Polignac number, because 51313023 - 2⁶ = 51312959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51312987 and 51313005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123738 + ... + 124151.

It is an arithmetic number, because the mean of its divisors is an integer number (6445140).

Almost surely, 2^51313023 is an apocalyptic number.

51313023 is a deficient number, since it is larger than the sum of its proper divisors (26028657).

51313023 is a wasteful number, since it uses less digits than its factorization.

51313023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247918 (or 247915 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 51313023 is about 7163.3108965059. The cubic root of 51313023 is about 371.6001383286.

Adding to 51313023 its reverse (32031315), we get a palindrome (83344338).

The spelling of 51313023 in words is "fifty-one million, three hundred thirteen thousand, twenty-three".