3121315151 has 2 divisors, whose sum is σ = 3121315152. Its totient is φ = 3121315150.

The previous prime is 3121315147. The next prime is 3121315157. The reversal of 3121315151 is 1515131213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3121315151 - 2² = 3121315147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121315157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560657575 + 1560657576.

It is an arithmetic number, because the mean of its divisors is an integer number (1560657576).

Almost surely, 2^3121315151 is an apocalyptic number.

3121315151 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121315151 is an equidigital number, since it uses as much as digits as its factorization.

3121315151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 450, while the sum is 23.

The square root of 3121315151 is about 55868.7314246529. The cubic root of 3121315151 is about 1461.4339996897.

Adding to 3121315151 its reverse (1515131213), we get a palindrome (4636446364).

It can be divided in two parts, 31213 and 15151, that added together give a palindrome (46364).

The spelling of 3121315151 in words is "three billion, one hundred twenty-one million, three hundred fifteen thousand, one hundred fifty-one".