1012111311 has 16 divisors (see below), whose sum is σ = 1374595200. Its totient is φ = 662221728.

The previous prime is 1012111307. The next prime is 1012111327. The reversal of 1012111311 is 1131112101.

It is not a de Polignac number, because 1012111311 - 2² = 1012111307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112305 + ... + 120981.

It is an arithmetic number, because the mean of its divisors is an integer number (85912200).

Almost surely, 2^1012111311 is an apocalyptic number.

1012111311 is a deficient number, since it is larger than the sum of its proper divisors (362483889).

1012111311 is an equidigital number, since it uses as much as digits as its factorization.

1012111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 1012111311 is about 31813.6969087216. The cubic root of 1012111311 is about 1004.0209142456.

Adding to 1012111311 its reverse (1131112101), we get a palindrome (2143223412).

The spelling of 1012111311 in words is "one billion, twelve million, one hundred eleven thousand, three hundred eleven".