31313242150450 has 48 divisors (see below), whose sum is σ = 62726873488776. Its totient is φ = 11561067648000.

The previous prime is 31313242150427. The next prime is 31313242150459. The reversal of 31313242150450 is 5405124231313.

It can be written as a sum of positive squares in 12 ways, for example, as 11499606685449 + 19813635465001 = 3391107^2 + 4451251^2 .

It is not an unprimeable number, because it can be changed into a prime (31313242150459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8596704 + ... + 11684596.

Almost surely, 2^{31313242150450} is an apocalyptic number.

31313242150450 is an abundant number, since it is smaller than the sum of its proper divisors (31413631338326).

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

31313242150450 is a wasteful number, since it uses less digits than its factorization.

31313242150450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103519 (or 3103514 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 31313242150450 its reverse (5405124231313), we get a palindrome (36718366381763).

The spelling of 31313242150450 in words is "thirty-one trillion, three hundred thirteen billion, two hundred forty-two million, one hundred fifty thousand, four hundred fifty".