31155124145 has 8 divisors (see below), whose sum is σ = 39011633856. Its totient is φ = 23840442736.

The previous prime is 31155124081. The next prime is 31155124177. The reversal of 31155124145 is 54142155113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31155124145 - 2⁶ = 31155124081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135456947 + ... + 135457176.

It is an arithmetic number, because the mean of its divisors is an integer number (4876454232).

Almost surely, 2^31155124145 is an apocalyptic number.

It is an amenable number.

31155124145 is a deficient number, since it is larger than the sum of its proper divisors (7856509711).

31155124145 is a wasteful number, since it uses less digits than its factorization.

31155124145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270914151.

The product of its digits is 12000, while the sum is 32.

Adding to 31155124145 its reverse (54142155113), we get a palindrome (85297279258).

The spelling of 31155124145 in words is "thirty-one billion, one hundred fifty-five million, one hundred twenty-four thousand, one hundred forty-five".