31003132213 has 2 divisors, whose sum is σ = 31003132214. Its totient is φ = 31003132212.

The previous prime is 31003132201. The next prime is 31003132229. The reversal of 31003132213 is 31223130013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30996067249 + 7064964 = 176057^2 + 2658^2 .

It is a cyclic number.

It is not a de Polignac number, because 31003132213 - 2⁹ = 31003131701 is a prime.

It is a super-2 number, since 2×31003132213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31003112213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15501566106 + 15501566107.

It is an arithmetic number, because the mean of its divisors is an integer number (15501566107).

Almost surely, 2^31003132213 is an apocalyptic number.

It is an amenable number.

31003132213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31003132213 is an equidigital number, since it uses as much as digits as its factorization.

31003132213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31003132213 its reverse (31223130013), we get a palindrome (62226262226).

It can be divided in two parts, 31003 and 132213, that added together give a square (163216 = 404²).

The spelling of 31003132213 in words is "thirty-one billion, three million, one hundred thirty-two thousand, two hundred thirteen".