4020223561231 has 16 divisors (see below), whose sum is σ = 4244967174240. Its totient is φ = 3796808480640.

The previous prime is 4020223561223. The next prime is 4020223561301. The reversal of 4020223561231 is 1321653220204.

It is a cyclic number.

It is not a de Polignac number, because 4020223561231 - 2³ = 4020223561223 is a prime.

It is a super-2 number, since 2×4020223561231² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4020223561193 and 4020223561202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020223531231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10799601 + ... + 11165653.

It is an arithmetic number, because the mean of its divisors is an integer number (265310448390).

Almost surely, 2^{4020223561231} is an apocalyptic number.

4020223561231 is a deficient number, since it is larger than the sum of its proper divisors (224743613009).

4020223561231 is a wasteful number, since it uses less digits than its factorization.

4020223561231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367866.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 4020223561231 its reverse (1321653220204), we get a palindrome (5341876781435).

The spelling of 4020223561231 in words is "four trillion, twenty billion, two hundred twenty-three million, five hundred sixty-one thousand, two hundred thirty-one".