3121420151 has 2 divisors, whose sum is σ = 3121420152. Its totient is φ = 3121420150.

The previous prime is 3121420147. The next prime is 3121420199. The reversal of 3121420151 is 1510241213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3121420151 - 2² = 3121420147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123420151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560710075 + 1560710076.

It is an arithmetic number, because the mean of its divisors is an integer number (1560710076).

Almost surely, 2^3121420151 is an apocalyptic number.

3121420151 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121420151 is an equidigital number, since it uses as much as digits as its factorization.

3121420151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 3121420151 is about 55869.6711194902. The cubic root of 3121420151 is about 1461.4503868900.

Adding to 3121420151 its reverse (1510241213), we get a palindrome (4631661364).

The spelling of 3121420151 in words is "three billion, one hundred twenty-one million, four hundred twenty thousand, one hundred fifty-one".