1061311320 has 48 divisors (see below), whose sum is σ = 3449262960. Its totient is φ = 283016256.

The previous prime is 1061311313. The next prime is 1061311327. The reversal of 1061311320 is 231131601.

1061311320 is a `hidden beast` number, since 10 + 613 + 11 + 32 + 0 = 666.

1061311320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1061311313) and next prime (1061311327).

It is a super-2 number, since 2×1061311320² = 2252763435920284800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1061311293 and 1061311302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061311327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1473684 + ... + 1474403.

It is an arithmetic number, because the mean of its divisors is an integer number (71859645).

Almost surely, 2^1061311320 is an apocalyptic number.

1061311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061311320 is an abundant number, since it is smaller than the sum of its proper divisors (2387951640).

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

1061311320 is a wasteful number, since it uses less digits than its factorization.

1061311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948104 (or 2948097 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1061311320 is about 32577.7734045775. The cubic root of 1061311320 is about 1020.0331015786.

Adding to 1061311320 its reverse (231131601), we get a palindrome (1292442921).

The spelling of 1061311320 in words is "one billion, sixty-one million, three hundred eleven thousand, three hundred twenty".