31220885343 has 8 divisors (see below), whose sum is σ = 42595936768. Its totient is φ = 20329878744.

The previous prime is 31220885341. The next prime is 31220885357. The reversal of 31220885343 is 34358802213.

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

It is not a de Polignac number, because 31220885343 - 2¹ = 31220885341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220885341) 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, 121011055 + ... + 121011312.

It is an arithmetic number, because the mean of its divisors is an integer number (5324492096).

Almost surely, 2^31220885343 is an apocalyptic number.

31220885343 is a deficient number, since it is larger than the sum of its proper divisors (11375051425).

31220885343 is a wasteful number, since it uses less digits than its factorization.

31220885343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242022413.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 31220885343 in words is "thirty-one billion, two hundred twenty million, eight hundred eighty-five thousand, three hundred forty-three".