505033213031 has 4 divisors (see below), whose sum is σ = 505689954000. Its totient is φ = 504376472064.

The previous prime is 505033213021. The next prime is 505033213033. The reversal of 505033213031 is 130312330505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505033213031 - 2⁶ = 505033212967 is a prime.

It is a super-2 number, since 2×505033213031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505033213033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328369331 + ... + 328370868.

It is an arithmetic number, because the mean of its divisors is an integer number (126422488500).

Almost surely, 2^505033213031 is an apocalyptic number.

505033213031 is a deficient number, since it is larger than the sum of its proper divisors (656740969).

505033213031 is an equidigital number, since it uses as much as digits as its factorization.

505033213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656740968.

The product of its (nonzero) digits is 4050, while the sum is 26.

Adding to 505033213031 its reverse (130312330505), we get a palindrome (635345543536).

The spelling of 505033213031 in words is "five hundred five billion, thirty-three million, two hundred thirteen thousand, thirty-one".