211302204031 has 2 divisors, whose sum is σ = 211302204032. Its totient is φ = 211302204030.

The previous prime is 211302204007. The next prime is 211302204037. The reversal of 211302204031 is 130402203112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211302204031 - 2¹⁷ = 211302072959 is a prime.

It is a super-2 number, since 2×211302204031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211302204037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105651102015 + 105651102016.

It is an arithmetic number, because the mean of its divisors is an integer number (105651102016).

Almost surely, 2^211302204031 is an apocalyptic number.

211302204031 is a deficient number, since it is larger than the sum of its proper divisors (1).

211302204031 is an equidigital number, since it uses as much as digits as its factorization.

211302204031 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 19.

Adding to 211302204031 its reverse (130402203112), we get a palindrome (341704407143).

The spelling of 211302204031 in words is "two hundred eleven billion, three hundred two million, two hundred four thousand, thirty-one".