31130203133 has 8 divisors (see below), whose sum is σ = 31442032440. Its totient is φ = 30818444800.

The previous prime is 31130203103. The next prime is 31130203151. The reversal of 31130203133 is 33130203113.

It can be written as a sum of positive squares in 4 ways, for example, as 28251558724 + 2878644409 = 168082^2 + 53653^2 .

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 31130203133 - 2¹⁰ = 31130202109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130203103) 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, 1555253 + ... + 1575141.

It is an arithmetic number, because the mean of its divisors is an integer number (3930254055).

Almost surely, 2^31130203133 is an apocalyptic number.

It is an amenable number.

31130203133 is a deficient number, since it is larger than the sum of its proper divisors (311829307).

31130203133 is a wasteful number, since it uses less digits than its factorization.

31130203133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35487.

The product of its (nonzero) digits is 486, while the sum is 20.

Subtracting from 31130203133 its sum of digits (20), we obtain a palindrome (31130203113).

Adding to 31130203133 its reverse (33130203113), we get a palindrome (64260406246).

The spelling of 31130203133 in words is "thirty-one billion, one hundred thirty million, two hundred three thousand, one hundred thirty-three".