31450434246 has 160 divisors (see below), whose sum is σ = 88671432960. Its totient is φ = 8093649600.

The previous prime is 31450434241. The next prime is 31450434293. The reversal of 31450434246 is 64243405413.

It is a self number, because there is not a number n which added to its sum of digits gives 31450434246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31450434241) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1348101 + ... + 1371231.

It is an arithmetic number, because the mean of its divisors is an integer number (554196456).

Almost surely, 2^31450434246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31450434246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44335716480).

31450434246 is an abundant number, since it is smaller than the sum of its proper divisors (57220998714).

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

31450434246 is a wasteful number, since it uses less digits than its factorization.

31450434246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23272 (or 23263 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 31450434246 its reverse (64243405413), we get a palindrome (95693839659).

The spelling of 31450434246 in words is "thirty-one billion, four hundred fifty million, four hundred thirty-four thousand, two hundred forty-six".