1220240423031 has 32 divisors (see below), whose sum is σ = 1865268607488. Its totient is φ = 695085511680.

The previous prime is 1220240423011. The next prime is 1220240423033. The reversal of 1220240423031 is 1303240420221.

It is a happy number.

It is not a de Polignac number, because 1220240423031 - 2⁷ = 1220240422903 is a prime.

It is a super-2 number, since 2×1220240423031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220240422992 and 1220240423010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220240423033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50892876 + ... + 50916846.

It is an arithmetic number, because the mean of its divisors is an integer number (58289643984).

Almost surely, 2^{1220240423031} is an apocalyptic number.

1220240423031 is a deficient number, since it is larger than the sum of its proper divisors (645028184457).

1220240423031 is a wasteful number, since it uses less digits than its factorization.

1220240423031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31511.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1220240423031 its reverse (1303240420221), we get a palindrome (2523480843252).

The spelling of 1220240423031 in words is "one trillion, two hundred twenty billion, two hundred forty million, four hundred twenty-three thousand, thirty-one".