31130003213 has 8 divisors (see below), whose sum is σ = 31528491840. Its totient is φ = 30732597280.

The previous prime is 31130003189. The next prime is 31130003231. The reversal of 31130003213 is 31230003113.

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 31130003213 - 2⁸ = 31130002957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31130003191 and 31130003200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130002213) 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, 212723 + ... + 327888.

It is an arithmetic number, because the mean of its divisors is an integer number (3941061480).

Almost surely, 2^31130003213 is an apocalyptic number.

It is an amenable number.

31130003213 is a deficient number, since it is larger than the sum of its proper divisors (398488627).

31130003213 is an equidigital number, since it uses as much as digits as its factorization.

31130003213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541347.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31130003213 its reverse (31230003113), we get a palindrome (62360006326).

The spelling of 31130003213 in words is "thirty-one billion, one hundred thirty million, three thousand, two hundred thirteen".