31313202211245 has 16 divisors (see below), whose sum is σ = 50101214916672. Its totient is φ = 16700344053120.

The previous prime is 31313202211241. The next prime is 31313202211303. The reversal of 31313202211245 is 54211220231313.

It is not a de Polignac number, because 31313202211245 - 2² = 31313202211241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313202211241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8390154 + ... + 11533476.

It is an arithmetic number, because the mean of its divisors is an integer number (3131325932292).

Almost surely, 2^{31313202211245} is an apocalyptic number.

It is an amenable number.

31313202211245 is a deficient number, since it is larger than the sum of its proper divisors (18788012705427).

31313202211245 is a wasteful number, since it uses less digits than its factorization.

31313202211245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807452.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 31313202211245 its reverse (54211220231313), we get a palindrome (85524422442558).

The spelling of 31313202211245 in words is "thirty-one trillion, three hundred thirteen billion, two hundred two million, two hundred eleven thousand, two hundred forty-five".