31310140023445 has 4 divisors (see below), whose sum is σ = 37572168028140. Its totient is φ = 25048112018752.

The previous prime is 31310140023413. The next prime is 31310140023457. The reversal of 31310140023445 is 54432004101313.

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 10902794555844 + 20407345467601 = 3301938^2 + 4517449^2 .

It is a cyclic number.

It is not a de Polignac number, because 31310140023445 - 2⁵ = 31310140023413 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, 3131014002340 + ... + 3131014002349.

It is an arithmetic number, because the mean of its divisors is an integer number (9393042007035).

Almost surely, 2^{31310140023445} is an apocalyptic number.

It is an amenable number.

31310140023445 is a deficient number, since it is larger than the sum of its proper divisors (6262028004695).

31310140023445 is an equidigital number, since it uses as much as digits as its factorization.

31310140023445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262028004694.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 31310140023445 its reverse (54432004101313), we get a palindrome (85742144124758).

The spelling of 31310140023445 in words is "thirty-one trillion, three hundred ten billion, one hundred forty million, twenty-three thousand, four hundred forty-five".