31145343513022 has 32 divisors (see below), whose sum is σ = 48372187500000. Its totient is φ = 15022243600896.

The previous prime is 31145343513017. The next prime is 31145343513023. The reversal of 31145343513022 is 22031534354113.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31145343513023) 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, 1186521354 + ... + 1186547602.

It is an arithmetic number, because the mean of its divisors is an integer number (1511630859375).

Almost surely, 2^{31145343513022} is an apocalyptic number.

31145343513022 is a deficient number, since it is larger than the sum of its proper divisors (17226843986978).

31145343513022 is a wasteful number, since it uses less digits than its factorization.

31145343513022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43788.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 31145343513022 its reverse (22031534354113), we get a palindrome (53176877867135).

The spelling of 31145343513022 in words is "thirty-one trillion, one hundred forty-five billion, three hundred forty-three million, five hundred thirteen thousand, twenty-two".