1220502431 has 2 divisors, whose sum is σ = 1220502432. Its totient is φ = 1220502430.

The previous prime is 1220502421. The next prime is 1220502433. The reversal of 1220502431 is 1342050221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1342050221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220502431 - 2²⁶ = 1153393567 is a prime.

It is a super-2 number, since 2×1220502431² = 2979252368153819522, which contains 22 as substring.

Together with 1220502433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220502433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610251215 + 610251216.

It is an arithmetic number, because the mean of its divisors is an integer number (610251216).

Almost surely, 2^1220502431 is an apocalyptic number.

1220502431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220502431 is an equidigital number, since it uses as much as digits as its factorization.

1220502431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1220502431 is about 34935.6899316444. The cubic root of 1220502431 is about 1068.6763937498.

Adding to 1220502431 its reverse (1342050221), we get a palindrome (2562552652).

The spelling of 1220502431 in words is "one billion, two hundred twenty million, five hundred two thousand, four hundred thirty-one".