2011031431 has 6 divisors (see below), whose sum is σ = 2030756280. Its totient is φ = 1991496348.

The previous prime is 2011031401. The next prime is 2011031443. The reversal of 2011031431 is 1341301102.

It is not a de Polignac number, because 2011031431 - 2¹⁹ = 2010507143 is a prime.

It is a super-2 number, since 2×2011031431² = 8088494832939815522, 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 (2011031401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84171 + ... + 105388.

It is an arithmetic number, because the mean of its divisors is an integer number (338459380).

Almost surely, 2^2011031431 is an apocalyptic number.

2011031431 is a deficient number, since it is larger than the sum of its proper divisors (19724849).

2011031431 is an equidigital number, since it uses as much as digits as its factorization.

2011031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189765 (or 189662 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2011031431 is about 44844.5250950437. The cubic root of 2011031431 is about 1262.2332592828.

Adding to 2011031431 its reverse (1341301102), we get a palindrome (3352332533).

The spelling of 2011031431 in words is "two billion, eleven million, thirty-one thousand, four hundred thirty-one".