3154140221 has 4 divisors (see below), whose sum is σ = 3239387292. Its totient is φ = 3068893152.

The previous prime is 3154140217. The next prime is 3154140287. The reversal of 3154140221 is 1220414513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2738428900 + 415711321 = 52330^2 + 20389^2 .

It is a cyclic number.

It is not a de Polignac number, because 3154140221 - 2² = 3154140217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3154140421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42623480 + ... + 42623553.

It is an arithmetic number, because the mean of its divisors is an integer number (809846823).

Almost surely, 2^3154140221 is an apocalyptic number.

It is an amenable number.

3154140221 is a deficient number, since it is larger than the sum of its proper divisors (85247071).

3154140221 is an equidigital number, since it uses as much as digits as its factorization.

3154140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85247070.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 3154140221 is about 56161.7327100936. The cubic root of 3154140221 is about 1466.5391645762.

Adding to 3154140221 its reverse (1220414513), we get a palindrome (4374554734).

The spelling of 3154140221 in words is "three billion, one hundred fifty-four million, one hundred forty thousand, two hundred twenty-one".