31953346099 has 4 divisors (see below), whose sum is σ = 31957805464. Its totient is φ = 31948886736.

The previous prime is 31953346097. The next prime is 31953346123. The reversal of 31953346099 is 99064335913.

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 31953346099 - 2¹ = 31953346097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31953346093) 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, 2218917 + ... + 2233270.

It is an arithmetic number, because the mean of its divisors is an integer number (7989451366).

Almost surely, 2^31953346099 is an apocalyptic number.

31953346099 is a deficient number, since it is larger than the sum of its proper divisors (4459365).

31953346099 is an equidigital number, since it uses as much as digits as its factorization.

31953346099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459364.

The product of its (nonzero) digits is 2361960, while the sum is 52.

The spelling of 31953346099 in words is "thirty-one billion, nine hundred fifty-three million, three hundred forty-six thousand, ninety-nine".