31023200223011 has 4 divisors (see below), whose sum is σ = 31027917152232. Its totient is φ = 31018483293792.

The previous prime is 31023200222953. The next prime is 31023200223101. The reversal of 31023200223011 is 11032200232013.

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 31023200223011 - 2¹⁸ = 31023199960867 is a prime.

It is a super-2 number, since 2×31023200223011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31023200243011) 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, 2358454745 + ... + 2358467898.

It is an arithmetic number, because the mean of its divisors is an integer number (7756979288058).

Almost surely, 2^{31023200223011} is an apocalyptic number.

31023200223011 is a deficient number, since it is larger than the sum of its proper divisors (4716929221).

31023200223011 is an equidigital number, since it uses as much as digits as its factorization.

31023200223011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716929220.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31023200223011 its reverse (11032200232013), we get a palindrome (42055400455024).

The spelling of 31023200223011 in words is "thirty-one trillion, twenty-three billion, two hundred million, two hundred twenty-three thousand, eleven".