31432145110523 has 4 divisors (see below), whose sum is σ = 31516413596448. Its totient is φ = 31347876624600.

The previous prime is 31432145110517. The next prime is 31432145110537. The reversal of 31432145110523 is 32501154123413.

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

It is a cyclic number.

It is not a de Polignac number, because 31432145110523 - 2²⁰ = 31432144061947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31432145112523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42134242403 + ... + 42134243148.

It is an arithmetic number, because the mean of its divisors is an integer number (7879103399112).

Almost surely, 2^{31432145110523} is an apocalyptic number.

31432145110523 is a deficient number, since it is larger than the sum of its proper divisors (84268485925).

31432145110523 is an equidigital number, since it uses as much as digits as its factorization.

31432145110523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84268485924.

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

Adding to 31432145110523 its reverse (32501154123413), we get a palindrome (63933299233936).

The spelling of 31432145110523 in words is "thirty-one trillion, four hundred thirty-two billion, one hundred forty-five million, one hundred ten thousand, five hundred twenty-three".