1320463231 has 4 divisors (see below), whose sum is σ = 1334076352. Its totient is φ = 1306850112.

The previous prime is 1320463229. The next prime is 1320463241. The reversal of 1320463231 is 1323640231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320463231 - 2¹ = 1320463229 is a prime.

It is a super-2 number, since 2×1320463231² = 3487246288845918722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320463196 and 1320463205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320463241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6806415 + ... + 6806608.

It is an arithmetic number, because the mean of its divisors is an integer number (333519088).

Almost surely, 2^1320463231 is an apocalyptic number.

1320463231 is a deficient number, since it is larger than the sum of its proper divisors (13613121).

1320463231 is an equidigital number, since it uses as much as digits as its factorization.

1320463231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13613120.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 1320463231 is about 36338.1786967922. The cubic root of 1320463231 is about 1097.0896152983.

The spelling of 1320463231 in words is "one billion, three hundred twenty million, four hundred sixty-three thousand, two hundred thirty-one".