2151031 has 2 divisors, whose sum is σ = 2151032. Its totient is φ = 2151030.

The previous prime is 2151013. The next prime is 2151073. The reversal of 2151031 is 1301512.

2151031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2151031 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

Together with previous prime (2151013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2151031 - 2¹¹ = 2148983 is a prime.

It is a super-2 number, since 2×2151031² = 9253868725922, which contains 22 as substring.

It is a Chen prime.

2151031 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075515 + 1075516.

It is an arithmetic number, because the mean of its divisors is an integer number (1075516).

2^2151031 is an apocalyptic number.

2151031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151031 is an equidigital number, since it uses as much as digits as its factorization.

2151031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 2151031 is about 1466.6393558063. The cubic root of 2151031 is about 129.0869153664.

Adding to 2151031 its reverse (1301512), we get a palindrome (3452543).

The spelling of 2151031 in words is "two million, one hundred fifty-one thousand, thirty-one".