145603431251 has 4 divisors (see below), whose sum is σ = 145604195112. Its totient is φ = 145602667392.

The previous prime is 145603431191. The next prime is 145603431283. The reversal of 145603431251 is 152134306541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145603431251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145603431151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166451 + ... + 564723.

It is an arithmetic number, because the mean of its divisors is an integer number (36401048778).

Almost surely, 2^145603431251 is an apocalyptic number.

145603431251 is a deficient number, since it is larger than the sum of its proper divisors (763861).

145603431251 is an equidigital number, since it uses as much as digits as its factorization.

145603431251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763860.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 145603431251 its reverse (152134306541), we get a palindrome (297737737792).

The spelling of 145603431251 in words is "one hundred forty-five billion, six hundred three million, four hundred thirty-one thousand, two hundred fifty-one".