1220431301 has 8 divisors (see below), whose sum is σ = 1248106200. Its totient is φ = 1193052672.

The previous prime is 1220431291. The next prime is 1220431321. The reversal of 1220431301 is 1031340221.

It can be written as a sum of positive squares in 4 ways, for example, as 164506276 + 1055925025 = 12826^2 + 32495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220431301 - 2¹⁸ = 1220169157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220431301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220431321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65726 + ... + 82223.

It is an arithmetic number, because the mean of its divisors is an integer number (156013275).

Almost surely, 2^1220431301 is an apocalyptic number.

It is an amenable number.

1220431301 is a deficient number, since it is larger than the sum of its proper divisors (27674899).

1220431301 is a wasteful number, since it uses less digits than its factorization.

1220431301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148135.

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

The square root of 1220431301 is about 34934.6719034257. The cubic root of 1220431301 is about 1068.6556327837.

Adding to 1220431301 its reverse (1031340221), we get a palindrome (2251771522).

The spelling of 1220431301 in words is "one billion, two hundred twenty million, four hundred thirty-one thousand, three hundred one".