31522123345 has 8 divisors (see below), whose sum is σ = 38024593920. Its totient is φ = 25085668080.

The previous prime is 31522123327. The next prime is 31522123349. The reversal of 31522123345 is 54332122513.

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

It is not a de Polignac number, because 31522123345 - 2¹¹ = 31522121297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31522123349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16502775 + ... + 16504684.

It is an arithmetic number, because the mean of its divisors is an integer number (4753074240).

Almost surely, 2^31522123345 is an apocalyptic number.

It is an amenable number.

31522123345 is a deficient number, since it is larger than the sum of its proper divisors (6502470575).

31522123345 is a wasteful number, since it uses less digits than its factorization.

31522123345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33007655.

The product of its digits is 21600, while the sum is 31.

Adding to 31522123345 its reverse (54332122513), we get a palindrome (85854245858).

The spelling of 31522123345 in words is "thirty-one billion, five hundred twenty-two million, one hundred twenty-three thousand, three hundred forty-five".