1320998403 has 8 divisors (see below), whose sum is σ = 1798806528. Its totient is φ = 861927944.

The previous prime is 1320998323. The next prime is 1320998429. The reversal of 1320998403 is 3048990231.

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 1320998403 - 2¹² = 1320994307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320998473) 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, 4684251 + ... + 4684532.

It is an arithmetic number, because the mean of its divisors is an integer number (224850816).

Almost surely, 2^1320998403 is an apocalyptic number.

1320998403 is a deficient number, since it is larger than the sum of its proper divisors (477808125).

1320998403 is an equidigital number, since it uses as much as digits as its factorization.

1320998403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9368833.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1320998403 is about 36345.5417210970. The cubic root of 1320998403 is about 1097.2378088332.

The spelling of 1320998403 in words is "one billion, three hundred twenty million, nine hundred ninety-eight thousand, four hundred three".