3132220340 has 12 divisors (see below), whose sum is σ = 6577662756. Its totient is φ = 1252888128.

The previous prime is 3132220321. The next prime is 3132220367. The reversal of 3132220340 is 430222313.

It can be written as a sum of positive squares in 2 ways, for example, as 713744656 + 2418475684 = 26716^2 + 49178^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 156611017 = 3132220340 / (3 + 1 + 3 + 2 + 2 + 2 + 0 + 3 + 4 + 0).

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, 78305489 + ... + 78305528.

It is an arithmetic number, because the mean of its divisors is an integer number (548138563).

Almost surely, 2^3132220340 is an apocalyptic number.

It is an amenable number.

3132220340 is an abundant number, since it is smaller than the sum of its proper divisors (3445442416).

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

3132220340 is a wasteful number, since it uses less digits than its factorization.

3132220340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156611026 (or 156611024 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 3132220340 is about 55966.2428612105. The cubic root of 3132220340 is about 1463.1339977968.

Adding to 3132220340 its reverse (430222313), we get a palindrome (3562442653).

The spelling of 3132220340 in words is "three billion, one hundred thirty-two million, two hundred twenty thousand, three hundred forty".