1298323381 has 8 divisors (see below), whose sum is σ = 1338220224. Its totient is φ = 1258867680.

The previous prime is 1298323363. The next prime is 1298323393. The reversal of 1298323381 is 1833238921.

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

It is a cyclic number.

It is not a de Polignac number, because 1298323381 - 2⁵ = 1298323349 is a prime.

It is a super-2 number, since 2×1298323381² = 3371287203302542322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298323681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104305 + ... + 116086.

It is an arithmetic number, because the mean of its divisors is an integer number (167277528).

Almost surely, 2^1298323381 is an apocalyptic number.

It is an amenable number.

1298323381 is a deficient number, since it is larger than the sum of its proper divisors (39896843).

1298323381 is a wasteful number, since it uses less digits than its factorization.

1298323381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220571.

The product of its digits is 62208, while the sum is 40.

The square root of 1298323381 is about 36032.2547310046. The cubic root of 1298323381 is about 1090.9234888906.

The spelling of 1298323381 in words is "one billion, two hundred ninety-eight million, three hundred twenty-three thousand, three hundred eighty-one".