31122140223 has 8 divisors (see below), whose sum is σ = 41501033728. Its totient is φ = 20745670104.

The previous prime is 31122140191. The next prime is 31122140233. The reversal of 31122140223 is 32204122113.

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

It is not a de Polignac number, because 31122140223 - 2⁵ = 31122140191 is a prime.

It is a super-3 number, since 3×31122140223³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31122140223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122140233) 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, 575665 + ... + 627402.

It is an arithmetic number, because the mean of its divisors is an integer number (5187629216).

Almost surely, 2^31122140223 is an apocalyptic number.

31122140223 is a deficient number, since it is larger than the sum of its proper divisors (10378893505).

31122140223 is a wasteful number, since it uses less digits than its factorization.

31122140223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211693.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31122140223 its reverse (32204122113), we get a palindrome (63326262336).

The spelling of 31122140223 in words is "thirty-one billion, one hundred twenty-two million, one hundred forty thousand, two hundred twenty-three".