31620143155325 has 12 divisors (see below), whose sum is σ = 39336694061280. Its totient is φ = 25213716750960.

The previous prime is 31620143155319. The next prime is 31620143155369. The reversal of 31620143155325 is 52355134102613.

It is not a de Polignac number, because 31620143155325 - 2⁶ = 31620143155261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2059936505 + ... + 2059951854.

It is an arithmetic number, because the mean of its divisors is an integer number (3278057838440).

Almost surely, 2^{31620143155325} is an apocalyptic number.

It is an amenable number.

31620143155325 is a deficient number, since it is larger than the sum of its proper divisors (7716550905955).

31620143155325 is a wasteful number, since it uses less digits than its factorization.

31620143155325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119888676 (or 4119888671 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

Adding to 31620143155325 its reverse (52355134102613), we get a palindrome (83975277257938).

The spelling of 31620143155325 in words is "thirty-one trillion, six hundred twenty billion, one hundred forty-three million, one hundred fifty-five thousand, three hundred twenty-five".