505263131351 has 8 divisors (see below), whose sum is σ = 551333887104. Its totient is φ = 459215332920.

The previous prime is 505263131299. The next prime is 505263131357. The reversal of 505263131351 is 153131362505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505263131351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505263131357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5693291 + ... + 5781356.

It is an arithmetic number, because the mean of its divisors is an integer number (68916735888).

Almost surely, 2^505263131351 is an apocalyptic number.

505263131351 is a deficient number, since it is larger than the sum of its proper divisors (46070755753).

505263131351 is a wasteful number, since it uses less digits than its factorization.

505263131351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11478661.

The product of its (nonzero) digits is 40500, while the sum is 35.

Adding to 505263131351 its reverse (153131362505), we get a palindrome (658394493856).

The spelling of 505263131351 in words is "five hundred five billion, two hundred sixty-three million, one hundred thirty-one thousand, three hundred fifty-one".