145431322523 has 2 divisors, whose sum is σ = 145431322524. Its totient is φ = 145431322522.

The previous prime is 145431322459. The next prime is 145431322591. The reversal of 145431322523 is 325223134541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145431322523 - 2⁶ = 145431322459 is a prime.

It is not a weakly prime, because it can be changed into another prime (145431324523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72715661261 + 72715661262.

It is an arithmetic number, because the mean of its divisors is an integer number (72715661262).

Almost surely, 2^145431322523 is an apocalyptic number.

145431322523 is a deficient number, since it is larger than the sum of its proper divisors (1).

145431322523 is an equidigital number, since it uses as much as digits as its factorization.

145431322523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 35.

The spelling of 145431322523 in words is "one hundred forty-five billion, four hundred thirty-one million, three hundred twenty-two thousand, five hundred twenty-three".