1031200326 has 24 divisors (see below), whose sum is σ = 2406134640. Its totient is φ = 317292336.

The previous prime is 1031200271. The next prime is 1031200327. The reversal of 1031200326 is 6230021301.

It is a super-2 number, since 2×1031200326² = 2126748224685012552, 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 = 1031200299 and 1031200308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031200327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2203186 + ... + 2203653.

It is an arithmetic number, because the mean of its divisors is an integer number (100255610).

Almost surely, 2^1031200326 is an apocalyptic number.

1031200326 is an abundant number, since it is smaller than the sum of its proper divisors (1374934314).

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

1031200326 is a wasteful number, since it uses less digits than its factorization.

1031200326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406860 (or 4406857 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1031200326 is about 32112.3080142179. The cubic root of 1031200326 is about 1010.2937831127.

Adding to 1031200326 its reverse (6230021301), we get a palindrome (7261221627).

The spelling of 1031200326 in words is "one billion, thirty-one million, two hundred thousand, three hundred twenty-six".