31140223550 has 24 divisors (see below), whose sum is σ = 58052794800. Its totient is φ = 12427706880.

The previous prime is 31140223529. The next prime is 31140223553. The reversal of 31140223550 is 5532204113.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31140223553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 687395 + ... + 731294.

It is an arithmetic number, because the mean of its divisors is an integer number (2418866450).

Almost surely, 2^31140223550 is an apocalyptic number.

31140223550 is a deficient number, since it is larger than the sum of its proper divisors (26912571250).

31140223550 is a wasteful number, since it uses less digits than its factorization.

31140223550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419140 (or 1419135 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 31140223550 its reverse (5532204113), we get a palindrome (36672427663).

The spelling of 31140223550 in words is "thirty-one billion, one hundred forty million, two hundred twenty-three thousand, five hundred fifty".