1231532502313 has 8 divisors (see below), whose sum is σ = 1237919866560. Its totient is φ = 1225160699280.

The previous prime is 1231532502301. The next prime is 1231532502433. The reversal of 1231532502313 is 3132052351321.

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 1231532502313 - 2³⁷ = 1094093548841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231532502713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3731595 + ... + 4048192.

It is an arithmetic number, because the mean of its divisors is an integer number (154739983320).

Almost surely, 2^{1231532502313} is an apocalyptic number.

It is an amenable number.

1231532502313 is a deficient number, since it is larger than the sum of its proper divisors (6387364247).

1231532502313 is an equidigital number, since it uses as much as digits as its factorization.

1231532502313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780607.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 1231532502313 its reverse (3132052351321), we get a palindrome (4363584853634).

The spelling of 1231532502313 in words is "one trillion, two hundred thirty-one billion, five hundred thirty-two million, five hundred two thousand, three hundred thirteen".