3125031380 has 12 divisors (see below), whose sum is σ = 6562565940. Its totient is φ = 1250012544.

The previous prime is 3125031319. The next prime is 3125031397. The reversal of 3125031380 is 831305213.

It can be written as a sum of positive squares in 2 ways, for example, as 735385924 + 2389645456 = 27118^2 + 48884^2 .

It is a super-2 number, since 2×3125031380² = 19531642251969408800, which contains 22 as substring.

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, 78125765 + ... + 78125804.

It is an arithmetic number, because the mean of its divisors is an integer number (546880495).

Almost surely, 2^3125031380 is an apocalyptic number.

It is an amenable number.

3125031380 is an abundant number, since it is smaller than the sum of its proper divisors (3437534560).

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

3125031380 is a wasteful number, since it uses less digits than its factorization.

3125031380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156251578 (or 156251576 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3125031380 is about 55901.9801080427. The cubic root of 3125031380 is about 1462.0137627261.

Adding to 3125031380 its reverse (831305213), we get a palindrome (3956336593).

The spelling of 3125031380 in words is "three billion, one hundred twenty-five million, thirty-one thousand, three hundred eighty".