1331231351 has 2 divisors, whose sum is σ = 1331231352. Its totient is φ = 1331231350.

The previous prime is 1331231347. The next prime is 1331231381. The reversal of 1331231351 is 1531321331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331231351 - 2² = 1331231347 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331231311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665615675 + 665615676.

It is an arithmetic number, because the mean of its divisors is an integer number (665615676).

Almost surely, 2^1331231351 is an apocalyptic number.

1331231351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331231351 is an equidigital number, since it uses as much as digits as its factorization.

1331231351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 23.

The square root of 1331231351 is about 36486.0432357360. The cubic root of 1331231351 is about 1100.0637293656.

Adding to 1331231351 its reverse (1531321331), we get a palindrome (2862552682).

The spelling of 1331231351 in words is "one billion, three hundred thirty-one million, two hundred thirty-one thousand, three hundred fifty-one".