214621031 has 2 divisors, whose sum is σ = 214621032. Its totient is φ = 214621030.

The previous prime is 214621007. The next prime is 214621037. The reversal of 214621031 is 130126412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214621031 is a prime.

It is a super-2 number, since 2×214621031² = 92124373895005922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 214620994 and 214621012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214621037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107310515 + 107310516.

It is an arithmetic number, because the mean of its divisors is an integer number (107310516).

Almost surely, 2^214621031 is an apocalyptic number.

214621031 is a deficient number, since it is larger than the sum of its proper divisors (1).

214621031 is an equidigital number, since it uses as much as digits as its factorization.

214621031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 214621031 is about 14649.9498633954. The cubic root of 214621031 is about 598.7204500448.

Adding to 214621031 its reverse (130126412), we get a palindrome (344747443).

The spelling of 214621031 in words is "two hundred fourteen million, six hundred twenty-one thousand, thirty-one".