505347631 has 2 divisors, whose sum is σ = 505347632. Its totient is φ = 505347630.

The previous prime is 505347611. The next prime is 505347637. The reversal of 505347631 is 136743505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505347631 - 2⁵ = 505347599 is a prime.

It is a super-2 number, since 2×505347631² = 510752456314624322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505347637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252673815 + 252673816.

It is an arithmetic number, because the mean of its divisors is an integer number (252673816).

Almost surely, 2^505347631 is an apocalyptic number.

505347631 is a deficient number, since it is larger than the sum of its proper divisors (1).

505347631 is an equidigital number, since it uses as much as digits as its factorization.

505347631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 505347631 is about 22479.9384118373. The cubic root of 505347631 is about 796.5201093788.

The spelling of 505347631 in words is "five hundred five million, three hundred forty-seven thousand, six hundred thirty-one".