542217631 has 2 divisors, whose sum is σ = 542217632. Its totient is φ = 542217630.

The previous prime is 542217623. The next prime is 542217653. The reversal of 542217631 is 136712245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542217631 - 2³ = 542217623 is a prime.

It is a super-2 number, since 2×542217631² = 587999918734504322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 542217593 and 542217602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542017631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271108815 + 271108816.

It is an arithmetic number, because the mean of its divisors is an integer number (271108816).

Almost surely, 2^542217631 is an apocalyptic number.

542217631 is a deficient number, since it is larger than the sum of its proper divisors (1).

542217631 is an equidigital number, since it uses as much as digits as its factorization.

542217631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 542217631 is about 23285.5670104896. The cubic root of 542217631 is about 815.4384988962.

Adding to 542217631 its reverse (136712245), we get a palindrome (678929876).

The spelling of 542217631 in words is "five hundred forty-two million, two hundred seventeen thousand, six hundred thirty-one".