31212734505 has 8 divisors (see below), whose sum is σ = 49940375232. Its totient is φ = 16646791728.

The previous prime is 31212734489. The next prime is 31212734513. The reversal of 31212734505 is 50543721213.

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

It is not a de Polignac number, because 31212734505 - 2⁴ = 31212734489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040424469 + ... + 1040424498.

It is an arithmetic number, because the mean of its divisors is an integer number (6242546904).

Almost surely, 2^31212734505 is an apocalyptic number.

It is an amenable number.

31212734505 is a deficient number, since it is larger than the sum of its proper divisors (18727640727).

31212734505 is a wasteful number, since it uses less digits than its factorization.

31212734505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080848975.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 31212734505 in words is "thirty-one billion, two hundred twelve million, seven hundred thirty-four thousand, five hundred five".