212431264139 has 2 divisors, whose sum is σ = 212431264140. Its totient is φ = 212431264138.

The previous prime is 212431264117. The next prime is 212431264147. The reversal of 212431264139 is 931462134212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212431264139 - 2³⁶ = 143711787403 is a prime.

It is a super-2 number, since 2×212431264139² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212431264109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106215632069 + 106215632070.

It is an arithmetic number, because the mean of its divisors is an integer number (106215632070).

Almost surely, 2^212431264139 is an apocalyptic number.

212431264139 is a deficient number, since it is larger than the sum of its proper divisors (1).

212431264139 is an equidigital number, since it uses as much as digits as its factorization.

212431264139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The spelling of 212431264139 in words is "two hundred twelve billion, four hundred thirty-one million, two hundred sixty-four thousand, one hundred thirty-nine".