1220430131 has 2 divisors, whose sum is σ = 1220430132. Its totient is φ = 1220430130.

The previous prime is 1220430109. The next prime is 1220430137. The reversal of 1220430131 is 1310340221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220430131 - 2²² = 1216235827 is a prime.

It is a super-2 number, since 2×1220430131² = 2978899409305354322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1220430137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610215065 + 610215066.

It is an arithmetic number, because the mean of its divisors is an integer number (610215066).

Almost surely, 2^1220430131 is an apocalyptic number.

1220430131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220430131 is an equidigital number, since it uses as much as digits as its factorization.

1220430131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1220430131 is about 34934.6551578801. The cubic root of 1220430131 is about 1068.6552912849.

Adding to 1220430131 its reverse (1310340221), we get a palindrome (2530770352).

The spelling of 1220430131 in words is "one billion, two hundred twenty million, four hundred thirty thousand, one hundred thirty-one".