1331351398 has 8 divisors (see below), whose sum is σ = 2150644608. Its totient is φ = 614469864.

The previous prime is 1331351393. The next prime is 1331351479. The reversal of 1331351398 is 8931531331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331351393) 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 in 3 ways as a sum of consecutive naturals, for example, 25602886 + ... + 25602937.

It is an arithmetic number, because the mean of its divisors is an integer number (268830576).

Almost surely, 2^1331351398 is an apocalyptic number.

1331351398 is a deficient number, since it is larger than the sum of its proper divisors (819293210).

1331351398 is a wasteful number, since it uses less digits than its factorization.

1331351398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51205838.

The product of its digits is 29160, while the sum is 37.

The square root of 1331351398 is about 36487.6883071537. The cubic root of 1331351398 is about 1100.0967953389.

It can be divided in two parts, 133 and 1351398, that added together give a palindrome (1351531).

The spelling of 1331351398 in words is "one billion, three hundred thirty-one million, three hundred fifty-one thousand, three hundred ninety-eight".