211201423031 has 2 divisors, whose sum is σ = 211201423032. Its totient is φ = 211201423030.

The previous prime is 211201423021. The next prime is 211201423079. The reversal of 211201423031 is 130324102112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211201423031 - 2⁶ = 211201422967 is a prime.

It is a super-2 number, since 2×211201423031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211201422994 and 211201423012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211201423021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600711515 + 105600711516.

It is an arithmetic number, because the mean of its divisors is an integer number (105600711516).

Almost surely, 2^211201423031 is an apocalyptic number.

211201423031 is a deficient number, since it is larger than the sum of its proper divisors (1).

211201423031 is an equidigital number, since it uses as much as digits as its factorization.

211201423031 is an evil number, because the sum of its binary digits is even.

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

Adding to 211201423031 its reverse (130324102112), we get a palindrome (341525525143).

The spelling of 211201423031 in words is "two hundred eleven billion, two hundred one million, four hundred twenty-three thousand, thirty-one".