31443134145 has 32 divisors (see below), whose sum is σ = 52756790400. Its totient is φ = 15969590784.

The previous prime is 31443134081. The next prime is 31443134171. The reversal of 31443134145 is 54143134413.

It is not a de Polignac number, because 31443134145 - 2⁶ = 31443134081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463335 + ... + 526844.

It is an arithmetic number, because the mean of its divisors is an integer number (1648649700).

Almost surely, 2^31443134145 is an apocalyptic number.

It is an amenable number.

31443134145 is a deficient number, since it is larger than the sum of its proper divisors (21313656255).

31443134145 is a wasteful number, since it uses less digits than its factorization.

31443134145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990289.

The product of its digits is 34560, while the sum is 33.

Adding to 31443134145 its reverse (54143134413), we get a palindrome (85586268558).

The spelling of 31443134145 in words is "thirty-one billion, four hundred forty-three million, one hundred thirty-four thousand, one hundred forty-five".