1030531720 has 32 divisors (see below), whose sum is σ = 2375253720. Its totient is φ = 402158080.

The previous prime is 1030531717. The next prime is 1030531727. The reversal of 1030531720 is 271350301.

1030531720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 330294276 + 700237444 = 18174^2 + 26462^2 .

It is a super-3 number, since 3×1030531720³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1030531691 and 1030531700.

It is not an unprimeable number, because it can be changed into a prime (1030531727) 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, 312547 + ... + 315826.

Almost surely, 2^1030531720 is an apocalyptic number.

1030531720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1030531720 is an abundant number, since it is smaller than the sum of its proper divisors (1344722000).

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

1030531720 is a wasteful number, since it uses less digits than its factorization.

1030531720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628425 (or 628421 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 1030531720 is about 32101.8958941680. The cubic root of 1030531720 is about 1010.0753856746.

It can be divided in two parts, 10305 and 31720, that added together give a square (42025 = 205²).

The spelling of 1030531720 in words is "one billion, thirty million, five hundred thirty-one thousand, seven hundred twenty".