220204423123031 has 4 divisors (see below), whose sum is σ = 220219690725552. Its totient is φ = 220189155520512.

The previous prime is 220204423122911. The next prime is 220204423123079. The reversal of 220204423123031 is 130321324402022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220204423123031 is a prime.

It is a super-2 number, since 2×220204423123031² (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 = 220204423122985 and 220204423123003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220204423123231) 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, 7633779626 + ... + 7633808471.

It is an arithmetic number, because the mean of its divisors is an integer number (55054922681388).

Almost surely, 2^{220204423123031} is an apocalyptic number.

220204423123031 is a deficient number, since it is larger than the sum of its proper divisors (15267602521).

220204423123031 is a wasteful number, since it uses less digits than its factorization.

220204423123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15267602520.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 220204423123031 its reverse (130321324402022), we get a palindrome (350525747525053).

The spelling of 220204423123031 in words is "two hundred twenty trillion, two hundred four billion, four hundred twenty-three million, one hundred twenty-three thousand, thirty-one".