31243430344 has 32 divisors (see below), whose sum is σ = 66978895680. Its totient is φ = 13384304064.

The previous prime is 31243430333. The next prime is 31243430347. The reversal of 31243430344 is 44303434213.

It is a super-3 number, since 3×31243430344³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31243430347) 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, 13639 + ... + 250345.

It is an arithmetic number, because the mean of its divisors is an integer number (2093090490).

Almost surely, 2^31243430344 is an apocalyptic number.

It is an amenable number.

31243430344 is an abundant number, since it is smaller than the sum of its proper divisors (35735465336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31243430344 is a wasteful number, since it uses less digits than its factorization.

31243430344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239077 (or 239073 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 31243430344 its reverse (44303434213), we get a palindrome (75546864557).

The spelling of 31243430344 in words is "thirty-one billion, two hundred forty-three million, four hundred thirty thousand, three hundred forty-four".