1312523445 has 8 divisors (see below), whose sum is σ = 2100037536. Its totient is φ = 700012496.

The previous prime is 1312523419. The next prime is 1312523461. The reversal of 1312523445 is 5443252131.

1312523445 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312523445 - 2⁵ = 1312523413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43750767 + ... + 43750796.

It is an arithmetic number, because the mean of its divisors is an integer number (262504692).

Almost surely, 2^1312523445 is an apocalyptic number.

1312523445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312523445 is a deficient number, since it is larger than the sum of its proper divisors (787514091).

1312523445 is an equidigital number, since it uses as much as digits as its factorization.

1312523445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87501571.

The product of its digits is 14400, while the sum is 30.

The square root of 1312523445 is about 36228.7654357694. The cubic root of 1312523445 is about 1094.8863041602.

Adding to 1312523445 its reverse (5443252131), we get a palindrome (6755775576).

The spelling of 1312523445 in words is "one billion, three hundred twelve million, five hundred twenty-three thousand, four hundred forty-five".