2312121131197 has 2 divisors, whose sum is σ = 2312121131198. Its totient is φ = 2312121131196.

The previous prime is 2312121131153. The next prime is 2312121131249. The reversal of 2312121131197 is 7911311212132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1465005219876 + 847115911321 = 1210374^2 + 920389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312121131197 - 2²⁷ = 2311986913469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2312121131147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156060565598 + 1156060565599.

It is an arithmetic number, because the mean of its divisors is an integer number (1156060565599).

Almost surely, 2^{2312121131197} is an apocalyptic number.

It is an amenable number.

2312121131197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312121131197 is an equidigital number, since it uses as much as digits as its factorization.

2312121131197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 34.

The spelling of 2312121131197 in words is "two trillion, three hundred twelve billion, one hundred twenty-one million, one hundred thirty-one thousand, one hundred ninety-seven".