2011158431 has 2 divisors, whose sum is σ = 2011158432. Its totient is φ = 2011158430.

The previous prime is 2011158427. The next prime is 2011158467. The reversal of 2011158431 is 1348511102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011158431 - 2² = 2011158427 is a prime.

It is a super-2 number, since 2×2011158431² = 8089516469164763522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2011158431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011158731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005579215 + 1005579216.

It is an arithmetic number, because the mean of its divisors is an integer number (1005579216).

Almost surely, 2^2011158431 is an apocalyptic number.

2011158431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011158431 is an equidigital number, since it uses as much as digits as its factorization.

2011158431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 2011158431 is about 44845.9410760885. The cubic root of 2011158431 is about 1262.2598294376.

Adding to 2011158431 its reverse (1348511102), we get a palindrome (3359669533).

The spelling of 2011158431 in words is "two billion, eleven million, one hundred fifty-eight thousand, four hundred thirty-one".