211031479 has 2 divisors, whose sum is σ = 211031480. Its totient is φ = 211031478.

The previous prime is 211031453. The next prime is 211031497. The reversal of 211031479 is 974130112.

211031479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (211031497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211031479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211031419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105515739 + 105515740.

It is an arithmetic number, because the mean of its divisors is an integer number (105515740).

Almost surely, 2^211031479 is an apocalyptic number.

211031479 is a deficient number, since it is larger than the sum of its proper divisors (1).

211031479 is an equidigital number, since it uses as much as digits as its factorization.

211031479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 211031479 is about 14526.9225577890. The cubic root of 211031479 is about 595.3637857259.

The spelling of 211031479 in words is "two hundred eleven million, thirty-one thousand, four hundred seventy-nine".