1301231120 has 160 divisors (see below), whose sum is σ = 3561676800. Its totient is φ = 432926208.

The previous prime is 1301231111. The next prime is 1301231149. The reversal of 1301231120 is 211321031.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1301231095 and 1301231104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2963861 + ... + 2964299.

It is an arithmetic number, because the mean of its divisors is an integer number (22260480).

Almost surely, 2^1301231120 is an apocalyptic number.

1301231120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1301231120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1780838400).

1301231120 is an abundant number, since it is smaller than the sum of its proper divisors (2260445680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1301231120 is a wasteful number, since it uses less digits than its factorization.

1301231120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1301231120 is about 36072.5812771972. The cubic root of 1301231120 is about 1091.7372963127.

Adding to 1301231120 its reverse (211321031), we get a palindrome (1512552151).

The spelling of 1301231120 in words is "one billion, three hundred one million, two hundred thirty-one thousand, one hundred twenty".