131121213071 has 2 divisors, whose sum is σ = 131121213072. Its totient is φ = 131121213070.

The previous prime is 131121213037. The next prime is 131121213103. The reversal of 131121213071 is 170312121131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131121213071 - 2⁶ = 131121213007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131121216071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65560606535 + 65560606536.

It is an arithmetic number, because the mean of its divisors is an integer number (65560606536).

Almost surely, 2^131121213071 is an apocalyptic number.

131121213071 is a deficient number, since it is larger than the sum of its proper divisors (1).

131121213071 is an equidigital number, since it uses as much as digits as its factorization.

131121213071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The spelling of 131121213071 in words is "one hundred thirty-one billion, one hundred twenty-one million, two hundred thirteen thousand, seventy-one".