1220415343 has 16 divisors (see below), whose sum is σ = 1408334400. Its totient is φ = 1035933696.

The previous prime is 1220415341. The next prime is 1220415367. The reversal of 1220415343 is 3435140221.

It is not a de Polignac number, because 1220415343 - 2¹ = 1220415341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220415341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387471 + ... + 390607.

It is an arithmetic number, because the mean of its divisors is an integer number (88020900).

Almost surely, 2^1220415343 is an apocalyptic number.

1220415343 is a deficient number, since it is larger than the sum of its proper divisors (187919057).

1220415343 is a wasteful number, since it uses less digits than its factorization.

1220415343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1220415343 is about 34934.4435049422. The cubic root of 1220415343 is about 1068.6509749547.

Adding to 1220415343 its reverse (3435140221), we get a palindrome (4655555564).

The spelling of 1220415343 in words is "one billion, two hundred twenty million, four hundred fifteen thousand, three hundred forty-three".