54231731 has 2 divisors, whose sum is σ = 54231732. Its totient is φ = 54231730.

The previous prime is 54231713. The next prime is 54231739. The reversal of 54231731 is 13713245.

Together with previous prime (54231713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54231731 - 2¹⁰ = 54230707 is a prime.

It is a super-2 number, since 2×54231731² = 5882161294512722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54231731.

It is not a weakly prime, because it can be changed into another prime (54231739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27115865 + 27115866.

It is an arithmetic number, because the mean of its divisors is an integer number (27115866).

Almost surely, 2^54231731 is an apocalyptic number.

54231731 is a deficient number, since it is larger than the sum of its proper divisors (1).

54231731 is an equidigital number, since it uses as much as digits as its factorization.

54231731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 54231731 is about 7364.2196463712. The cubic root of 54231731 is about 378.5162151961.

Adding to 54231731 its reverse (13713245), we get a palindrome (67944976).

The spelling of 54231731 in words is "fifty-four million, two hundred thirty-one thousand, seven hundred thirty-one".