3121367140 has 24 divisors (see below), whose sum is σ = 6560786232. Its totient is φ = 1247420160.

The previous prime is 3121367131. The next prime is 3121367141. The reversal of 3121367140 is 417631213.

It can be written as a sum of positive squares in 4 ways, for example, as 121176064 + 3000191076 = 11008^2 + 54774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3121367099 and 3121367108.

It is not an unprimeable number, because it can be changed into a prime (3121367141) 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, 47521 + ... + 92200.

It is an arithmetic number, because the mean of its divisors is an integer number (273366093).

Almost surely, 2^3121367140 is an apocalyptic number.

It is an amenable number.

3121367140 is an abundant number, since it is smaller than the sum of its proper divisors (3439419092).

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

3121367140 is a wasteful number, since it uses less digits than its factorization.

3121367140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140847 (or 140845 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3121367140 is about 55869.1967008655. The cubic root of 3121367140 is about 1461.4421135847.

Adding to 3121367140 its reverse (417631213), we get a palindrome (3538998353).

The spelling of 3121367140 in words is "three billion, one hundred twenty-one million, three hundred sixty-seven thousand, one hundred forty".