31132220355353 has 4 divisors (see below), whose sum is σ = 33527006536548. Its totient is φ = 28737434174160.

The previous prime is 31132220355277. The next prime is 31132220355377. The reversal of 31132220355353 is 35355302223113.

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 1871607316489 + 29260613038864 = 1368067^2 + 5409308^2 .

It is a cyclic number.

It is not a de Polignac number, because 31132220355353 - 2⁸ = 31132220355097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132220355553) 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, 1197393090578 + ... + 1197393090603.

It is an arithmetic number, because the mean of its divisors is an integer number (8381751634137).

Almost surely, 2^{31132220355353} is an apocalyptic number.

It is an amenable number.

31132220355353 is a deficient number, since it is larger than the sum of its proper divisors (2394786181195).

31132220355353 is a wasteful number, since it uses less digits than its factorization.

31132220355353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394786181194.

The product of its (nonzero) digits is 243000, while the sum is 38.

Adding to 31132220355353 its reverse (35355302223113), we get a palindrome (66487522578466).

The spelling of 31132220355353 in words is "thirty-one trillion, one hundred thirty-two billion, two hundred twenty million, three hundred fifty-five thousand, three hundred fifty-three".