1020340331 has 8 divisors (see below), whose sum is σ = 1039224144. Its totient is φ = 1001613600.

The previous prime is 1020340327. The next prime is 1020340367. The reversal of 1020340331 is 1330430201.

It is a happy number.

1020340331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020340331 - 2² = 1020340327 is a prime.

It is a super-2 number, since 2×1020340331² = 2082188782130379122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020340301) 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, 26120 + ... + 52181.

It is an arithmetic number, because the mean of its divisors is an integer number (129903018).

Almost surely, 2^1020340331 is an apocalyptic number.

1020340331 is a deficient number, since it is larger than the sum of its proper divisors (18883813).

1020340331 is an equidigital number, since it uses as much as digits as its factorization.

1020340331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78541.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1020340331 is about 31942.7664894574. The cubic root of 1020340331 is about 1006.7346529648.

Adding to 1020340331 its reverse (1330430201), we get a palindrome (2350770532).

The spelling of 1020340331 in words is "one billion, twenty million, three hundred forty thousand, three hundred thirty-one".