3100425561 has 12 divisors (see below), whose sum is σ = 4484790180. Its totient is φ = 2063997600.

The previous prime is 3100425551. The next prime is 3100425577. The reversal of 3100425561 is 1655240013.

3100425561 is a `hidden beast` number, since 3 + 100 + 4 + 2 + 556 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2858933961 + 241491600 = 53469^2 + 15540^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3100425561 is a prime.

It is a super-2 number, since 2×3100425561² = 19225277318604329442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3100425511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239406 + ... + 252023.

It is an arithmetic number, because the mean of its divisors is an integer number (373732515).

Almost surely, 2^3100425561 is an apocalyptic number.

It is an amenable number.

3100425561 is a deficient number, since it is larger than the sum of its proper divisors (1384364619).

3100425561 is a wasteful number, since it uses less digits than its factorization.

3100425561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492136 (or 492133 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 3100425561 is about 55681.4651477491. The cubic root of 3100425561 is about 1458.1664543202.

Adding to 3100425561 its reverse (1655240013), we get a palindrome (4755665574).

It can be divided in two parts, 31004 and 25561, that added together give a palindrome (56565).

The spelling of 3100425561 in words is "three billion, one hundred million, four hundred twenty-five thousand, five hundred sixty-one".