212311432139 has 2 divisors, whose sum is σ = 212311432140. Its totient is φ = 212311432138.

The previous prime is 212311432097. The next prime is 212311432153. The reversal of 212311432139 is 931234113212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212311432139 is a prime.

It is a super-2 number, since 2×212311432139² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (212311432199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155716069 + 106155716070.

It is an arithmetic number, because the mean of its divisors is an integer number (106155716070).

Almost surely, 2^212311432139 is an apocalyptic number.

212311432139 is a deficient number, since it is larger than the sum of its proper divisors (1).

212311432139 is an equidigital number, since it uses as much as digits as its factorization.

212311432139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The spelling of 212311432139 in words is "two hundred twelve billion, three hundred eleven million, four hundred thirty-two thousand, one hundred thirty-nine".