1320210231 has 16 divisors (see below), whose sum is σ = 1887891840. Its totient is φ = 818082720.

The previous prime is 1320210223. The next prime is 1320210233. The reversal of 1320210231 is 1320120231.

It is not a de Polignac number, because 1320210231 - 2³ = 1320210223 is a prime.

It is a super-2 number, since 2×1320210231² = 3485910108074146722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1320210231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320210233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215485 + ... + 221526.

It is an arithmetic number, because the mean of its divisors is an integer number (117993240).

Almost surely, 2^1320210231 is an apocalyptic number.

1320210231 is a deficient number, since it is larger than the sum of its proper divisors (567681609).

1320210231 is a wasteful number, since it uses less digits than its factorization.

1320210231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437086.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1320210231 is about 36334.6973428980. The cubic root of 1320210231 is about 1097.0195435752.

Adding to 1320210231 its reverse (1320120231), we get a palindrome (2640330462).

Subtracting from 1320210231 its reverse (1320120231), we obtain a square (90000 = 300²).

The spelling of 1320210231 in words is "one billion, three hundred twenty million, two hundred ten thousand, two hundred thirty-one".