1023020031 has 12 divisors (see below), whose sum is σ = 1499302616. Its totient is φ = 620011920.

The previous prime is 1023019997. The next prime is 1023020039. The reversal of 1023020031 is 1300203201.

It is a happy number.

It is not a de Polignac number, because 1023020031 - 2⁹ = 1023019519 is a prime.

It is a super-2 number, since 2×1023020031² = 2093139967654481922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023019989 and 1023020016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023020039) 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, 1408756 + ... + 1409481.

Almost surely, 2^1023020031 is an apocalyptic number.

1023020031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1023020031 is a deficient number, since it is larger than the sum of its proper divisors (476282585).

1023020031 is a wasteful number, since it uses less digits than its factorization.

1023020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818262 (or 2818251 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1023020031 is about 31984.6843192175. The cubic root of 1023020031 is about 1007.6152051124.

Adding to 1023020031 its reverse (1300203201), we get a palindrome (2323223232).

The spelling of 1023020031 in words is "one billion, twenty-three million, twenty thousand, thirty-one".