131223225079 has 2 divisors, whose sum is σ = 131223225080. Its totient is φ = 131223225078.

The previous prime is 131223225073. The next prime is 131223225101. The reversal of 131223225079 is 970522322131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131223225079 - 2¹¹ = 131223223031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131223225073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65611612539 + 65611612540.

It is an arithmetic number, because the mean of its divisors is an integer number (65611612540).

Almost surely, 2^131223225079 is an apocalyptic number.

131223225079 is a deficient number, since it is larger than the sum of its proper divisors (1).

131223225079 is an equidigital number, since it uses as much as digits as its factorization.

131223225079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 131223225079 in words is "one hundred thirty-one billion, two hundred twenty-three million, two hundred twenty-five thousand, seventy-nine".