31000024133 has 8 divisors (see below), whose sum is σ = 33392784600. Its totient is φ = 28608427008.

The previous prime is 31000024117. The next prime is 31000024163. The reversal of 31000024133 is 33142000013.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4417330369 + 26582693764 = 66463^2 + 163042^2 .

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 31000024133 - 2⁴ = 31000024117 is a prime.

It is a super-2 number, since 2×31000024133² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000024163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235088 + ... + 342441.

It is an arithmetic number, because the mean of its divisors is an integer number (4174098075).

Almost surely, 2^31000024133 is an apocalyptic number.

It is an amenable number.

31000024133 is a deficient number, since it is larger than the sum of its proper divisors (2392760467).

31000024133 is a wasteful number, since it uses less digits than its factorization.

31000024133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581671.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31000024133 its reverse (33142000013), we get a palindrome (64142024146).

The spelling of 31000024133 in words is "thirty-one billion, twenty-four thousand, one hundred thirty-three".