31033954874729 has 4 divisors (see below), whose sum is σ = 32859481632084. Its totient is φ = 29208428117376.

The previous prime is 31033954874719. The next prime is 31033954874789. The reversal of 31033954874729 is 92747845933013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20727286714729 + 10306668160000 = 4552723^2 + 3210400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31033954874729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31033954874719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 912763378652 + ... + 912763378685.

It is an arithmetic number, because the mean of its divisors is an integer number (8214870408021).

Almost surely, 2^{31033954874729} is an apocalyptic number.

It is an amenable number.

31033954874729 is a deficient number, since it is larger than the sum of its proper divisors (1825526757355).

31033954874729 is a wasteful number, since it uses less digits than its factorization.

31033954874729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825526757354.

The product of its (nonzero) digits is 137168640, while the sum is 65.

The spelling of 31033954874729 in words is "thirty-one trillion, thirty-three billion, nine hundred fifty-four million, eight hundred seventy-four thousand, seven hundred twenty-nine".