1020113031 has 16 divisors (see below), whose sum is σ = 1554969600. Its totient is φ = 582729888.

The previous prime is 1020112981. The next prime is 1020113047. The reversal of 1020113031 is 1303110201.

It is not a de Polignac number, because 1020113031 - 2¹⁴ = 1020096647 is a prime.

It is a super-2 number, since 2×1020113031² = 2081261192032013922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020112998 and 1020113016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020113071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79705 + ... + 91613.

It is an arithmetic number, because the mean of its divisors is an integer number (97185600).

Almost surely, 2^1020113031 is an apocalyptic number.

1020113031 is a deficient number, since it is larger than the sum of its proper divisors (534856569).

1020113031 is a wasteful number, since it uses less digits than its factorization.

1020113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15998.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1020113031 is about 31939.2083652679. The cubic root of 1020113031 is about 1006.6598910532.

Adding to 1020113031 its reverse (1303110201), we get a palindrome (2323223232).

It can be divided in two parts, 10201 and 13031, that multiplied together give a palindrome (132929231).

The spelling of 1020113031 in words is "one billion, twenty million, one hundred thirteen thousand, thirty-one".