31355345451 has 8 divisors (see below), whose sum is σ = 41808102544. Its totient is φ = 20903076000.

The previous prime is 31355345347. The next prime is 31355345507. The reversal of 31355345451 is 15454355313.

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

It is not a de Polignac number, because 31355345451 - 2¹⁸ = 31355083307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31355345051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72345 + ... + 260661.

It is an arithmetic number, because the mean of its divisors is an integer number (5226012818).

Almost surely, 2^31355345451 is an apocalyptic number.

31355345451 is a deficient number, since it is larger than the sum of its proper divisors (10452757093).

31355345451 is a wasteful number, since it uses less digits than its factorization.

31355345451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243821.

The product of its digits is 270000, while the sum is 39.

The spelling of 31355345451 in words is "thirty-one billion, three hundred fifty-five million, three hundred forty-five thousand, four hundred fifty-one".