213020323302031 has 4 divisors (see below), whose sum is σ = 243451798059472. Its totient is φ = 182588848544592.

The previous prime is 213020323302019. The next prime is 213020323302041. The reversal of 213020323302031 is 130203323020312.

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

It is not a de Polignac number, because 213020323302031 - 2¹³ = 213020323293839 is a prime.

It is a super-2 number, since 2×213020323302031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213020323301987 and 213020323302005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020323302041) 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, 15215737378710 + ... + 15215737378723.

It is an arithmetic number, because the mean of its divisors is an integer number (60862949514868).

Almost surely, 2^{213020323302031} is an apocalyptic number.

213020323302031 is a deficient number, since it is larger than the sum of its proper divisors (30431474757441).

213020323302031 is an equidigital number, since it uses as much as digits as its factorization.

213020323302031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30431474757440.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 213020323302031 its reverse (130203323020312), we get a palindrome (343223646322343).

The spelling of 213020323302031 in words is "two hundred thirteen trillion, twenty billion, three hundred twenty-three million, three hundred two thousand, thirty-one".