331434243131 has 2 divisors, whose sum is σ = 331434243132. Its totient is φ = 331434243130.

The previous prime is 331434243001. The next prime is 331434243143. The reversal of 331434243131 is 131342434133.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (131342434133) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331434243131 is a prime.

It is a super-2 number, since 2×331434243131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331434243181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165717121565 + 165717121566.

It is an arithmetic number, because the mean of its divisors is an integer number (165717121566).

Almost surely, 2^331434243131 is an apocalyptic number.

331434243131 is a deficient number, since it is larger than the sum of its proper divisors (1).

331434243131 is an equidigital number, since it uses as much as digits as its factorization.

331434243131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 32.

Adding to 331434243131 its reverse (131342434133), we get a palindrome (462776677264).

The spelling of 331434243131 in words is "three hundred thirty-one billion, four hundred thirty-four million, two hundred forty-three thousand, one hundred thirty-one".