1314531220 has 12 divisors (see below), whose sum is σ = 2760515604. Its totient is φ = 525812480.

The previous prime is 1314531149. The next prime is 1314531233. The reversal of 1314531220 is 221354131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 516016656 + 798514564 = 22716^2 + 28258^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1314531191 and 1314531200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32863261 + ... + 32863300.

It is an arithmetic number, because the mean of its divisors is an integer number (230042967).

Almost surely, 2^1314531220 is an apocalyptic number.

1314531220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1314531220 is an abundant number, since it is smaller than the sum of its proper divisors (1445984384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1314531220 is a wasteful number, since it uses less digits than its factorization.

1314531220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65726570 (or 65726568 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1314531220 is about 36256.4645270330. The cubic root of 1314531220 is about 1095.4443044507. Note that the first 3 decimals are identical.

Adding to 1314531220 its reverse (221354131), we get a palindrome (1535885351).

The spelling of 1314531220 in words is "one billion, three hundred fourteen million, five hundred thirty-one thousand, two hundred twenty".