131220424079 has 2 divisors, whose sum is σ = 131220424080. Its totient is φ = 131220424078.

The previous prime is 131220424001. The next prime is 131220424087. The reversal of 131220424079 is 970424022131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131220424079 - 2¹² = 131220419983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131220444079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65610212039 + 65610212040.

It is an arithmetic number, because the mean of its divisors is an integer number (65610212040).

Almost surely, 2^131220424079 is an apocalyptic number.

131220424079 is a deficient number, since it is larger than the sum of its proper divisors (1).

131220424079 is an equidigital number, since it uses as much as digits as its factorization.

131220424079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 131220424079 in words is "one hundred thirty-one billion, two hundred twenty million, four hundred twenty-four thousand, seventy-nine".