220231430437 has 2 divisors, whose sum is σ = 220231430438. Its totient is φ = 220231430436.

The previous prime is 220231430411. The next prime is 220231430449. The reversal of 220231430437 is 734034132022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118798098241 + 101433332196 = 344671^2 + 318486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220231430437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220231430399 and 220231430408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220231530437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110115715218 + 110115715219.

It is an arithmetic number, because the mean of its divisors is an integer number (110115715219).

Almost surely, 2^220231430437 is an apocalyptic number.

It is an amenable number.

220231430437 is a deficient number, since it is larger than the sum of its proper divisors (1).

220231430437 is an equidigital number, since it uses as much as digits as its factorization.

220231430437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 31.

Adding to 220231430437 its reverse (734034132022), we get a palindrome (954265562459).

The spelling of 220231430437 in words is "two hundred twenty billion, two hundred thirty-one million, four hundred thirty thousand, four hundred thirty-seven".