31523423302445 has 4 divisors (see below), whose sum is σ = 37828107962940. Its totient is φ = 25218738641952.

The previous prime is 31523423302433. The next prime is 31523423302517. The reversal of 31523423302445 is 54420332432513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24558030827236 + 6965392475209 = 4955606^2 + 2639203^2 .

It is a cyclic number.

It is not a de Polignac number, because 31523423302445 - 2¹⁰ = 31523423301421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3152342330240 + ... + 3152342330249.

It is an arithmetic number, because the mean of its divisors is an integer number (9457026990735).

Almost surely, 2^{31523423302445} is an apocalyptic number.

It is an amenable number.

31523423302445 is a deficient number, since it is larger than the sum of its proper divisors (6304684660495).

31523423302445 is an equidigital number, since it uses as much as digits as its factorization.

31523423302445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304684660494.

The product of its (nonzero) digits is 1036800, while the sum is 41.

Adding to 31523423302445 its reverse (54420332432513), we get a palindrome (85943755734958).

The spelling of 31523423302445 in words is "thirty-one trillion, five hundred twenty-three billion, four hundred twenty-three million, three hundred two thousand, four hundred forty-five".