1020231011 has 16 divisors (see below), whose sum is σ = 1084800000. Its totient is φ = 956805696.

The previous prime is 1020230993. The next prime is 1020231041. The reversal of 1020231011 is 1101320201.

It is a cyclic number.

It is not a de Polignac number, because 1020231011 - 2¹⁸ = 1019968867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020230983 and 1020231001.

It is not an unprimeable number, because it can be changed into a prime (1020231041) 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, 903095 + ... + 904223.

It is an arithmetic number, because the mean of its divisors is an integer number (67800000).

Almost surely, 2^1020231011 is an apocalyptic number.

1020231011 is a deficient number, since it is larger than the sum of its proper divisors (64568989).

1020231011 is a wasteful number, since it uses less digits than its factorization.

1020231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1020231011 is about 31941.0552580844. The cubic root of 1020231011 is about 1006.6986975881.

Adding to 1020231011 its reverse (1101320201), we get a palindrome (2121551212).

The spelling of 1020231011 in words is "one billion, twenty million, two hundred thirty-one thousand, eleven".