1013020331 has 4 divisors (see below), whose sum is σ = 1013710464. Its totient is φ = 1012330200.

The previous prime is 1013020289. The next prime is 1013020409. The reversal of 1013020331 is 1330203101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330203101 = 3343 ⋅397907.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013020331 is a prime.

It is a super-2 number, since 2×1013020331² = 2052420382038699122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013020031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342860 + ... + 345801.

It is an arithmetic number, because the mean of its divisors is an integer number (253427616).

Almost surely, 2^1013020331 is an apocalyptic number.

1013020331 is a deficient number, since it is larger than the sum of its proper divisors (690133).

1013020331 is an equidigital number, since it uses as much as digits as its factorization.

1013020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690132.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1013020331 is about 31827.9803160678. The cubic root of 1013020331 is about 1004.3214088587.

Adding to 1013020331 its reverse (1330203101), we get a palindrome (2343223432).

The spelling of 1013020331 in words is "one billion, thirteen million, twenty thousand, three hundred thirty-one".