31323112450545 has 64 divisors (see below), whose sum is σ = 50922133194240. Its totient is φ = 16438211328000.

The previous prime is 31323112450519. The next prime is 31323112450583. The reversal of 31323112450545 is 54505421132313.

It is not a de Polignac number, because 31323112450545 - 2¹⁴ = 31323112434161 is a prime.

It is a super-2 number, since 2×31323112450545² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3858947827 + ... + 3858955943.

It is an arithmetic number, because the mean of its divisors is an integer number (795658331160).

Almost surely, 2^{31323112450545} is an apocalyptic number.

It is an amenable number.

31323112450545 is a deficient number, since it is larger than the sum of its proper divisors (19599020743695).

31323112450545 is a wasteful number, since it uses less digits than its factorization.

31323112450545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 31323112450545 its reverse (54505421132313), we get a palindrome (85828533582858).

The spelling of 31323112450545 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred twelve million, four hundred fifty thousand, five hundred forty-five".