1220431250 has 48 divisors (see below), whose sum is σ = 2362348800. Its totient is φ = 472350000.

The previous prime is 1220431243. The next prime is 1220431291. The reversal of 1220431250 is 521340221.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190601 + ... + 196899.

It is an arithmetic number, because the mean of its divisors is an integer number (49215600).

Almost surely, 2^1220431250 is an apocalyptic number.

1220431250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220431250 is a deficient number, since it is larger than the sum of its proper divisors (1141917550).

1220431250 is an frugal number, since it uses more digits than its factorization.

1220431250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357 (or 6337 counting only the distinct ones).

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

The square root of 1220431250 is about 34934.6711734918. The cubic root of 1220431250 is about 1068.6556178979.

Adding to 1220431250 its reverse (521340221), we get a palindrome (1741771471).

The spelling of 1220431250 in words is "one billion, two hundred twenty million, four hundred thirty-one thousand, two hundred fifty".