1011012231 has 16 divisors (see below), whose sum is σ = 1372317920. Its totient is φ = 661893120.

The previous prime is 1011012229. The next prime is 1011012251. The reversal of 1011012231 is 1322101101.

It is not a de Polignac number, because 1011012231 - 2¹ = 1011012229 is a prime.

It is a super-2 number, since 2×1011012231² = 2044291462463194722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011012251) 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, 119055 + ... + 127263.

It is an arithmetic number, because the mean of its divisors is an integer number (85769870).

Almost surely, 2^1011012231 is an apocalyptic number.

1011012231 is a deficient number, since it is larger than the sum of its proper divisors (361305689).

1011012231 is an equidigital number, since it uses as much as digits as its factorization.

1011012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8946.

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

The square root of 1011012231 is about 31796.4185247333. The cubic root of 1011012231 is about 1003.6573511421.

Adding to 1011012231 its reverse (1322101101), we get a palindrome (2333113332).

The spelling of 1011012231 in words is "one billion, eleven million, twelve thousand, two hundred thirty-one".