31504543122406 has 8 divisors (see below), whose sum is σ = 47257614211680. Its totient is φ = 15752005051848.

The previous prime is 31504543122389. The next prime is 31504543122407. The reversal of 31504543122406 is 60422134540513.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31504543122407) 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, 133106881 + ... + 133343356.

It is an arithmetic number, because the mean of its divisors is an integer number (5907201776460).

Almost surely, 2^{31504543122406} is an apocalyptic number.

31504543122406 is a deficient number, since it is larger than the sum of its proper divisors (15753071089274).

31504543122406 is a wasteful number, since it uses less digits than its factorization.

31504543122406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266509358.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 31504543122406 its reverse (60422134540513), we get a palindrome (91926677662919).

The spelling of 31504543122406 in words is "thirty-one trillion, five hundred four billion, five hundred forty-three million, one hundred twenty-two thousand, four hundred six".