538399031 has 2 divisors, whose sum is σ = 538399032. Its totient is φ = 538399030.

The previous prime is 538399021. The next prime is 538399039. The reversal of 538399031 is 130993835.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538399031 is a prime.

It is a super-2 number, since 2×538399031² = 579747033163477922, which contains 22 as substring.

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 538399031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538399039) 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 as a sum of consecutive naturals, namely, 269199515 + 269199516.

It is an arithmetic number, because the mean of its divisors is an integer number (269199516).

Almost surely, 2^538399031 is an apocalyptic number.

538399031 is a deficient number, since it is larger than the sum of its proper divisors (1).

538399031 is an equidigital number, since it uses as much as digits as its factorization.

538399031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 538399031 is about 23203.4271391103. The cubic root of 538399031 is about 813.5197293873.

The spelling of 538399031 in words is "five hundred thirty-eight million, three hundred ninety-nine thousand, thirty-one".