1220363231 has 2 divisors, whose sum is σ = 1220363232. Its totient is φ = 1220363230.

The previous prime is 1220363201. The next prime is 1220363273. The reversal of 1220363231 is 1323630221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220363231 - 2¹⁰ = 1220362207 is a prime.

It is a super-2 number, since 2×1220363231² = 2978572831153518722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220363197 and 1220363206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220363201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610181615 + 610181616.

It is an arithmetic number, because the mean of its divisors is an integer number (610181616).

Almost surely, 2^1220363231 is an apocalyptic number.

1220363231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220363231 is an equidigital number, since it uses as much as digits as its factorization.

1220363231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1220363231 is about 34933.6976428205. The cubic root of 1220363231 is about 1068.6357641954.

Adding to 1220363231 its reverse (1323630221), we get a palindrome (2543993452).

The spelling of 1220363231 in words is "one billion, two hundred twenty million, three hundred sixty-three thousand, two hundred thirty-one".