31031130002213 has 24 divisors (see below), whose sum is σ = 35377288093560. Its totient is φ = 27175922928000.

The previous prime is 31031130002149. The next prime is 31031130002231. The reversal of 31031130002213 is 31220003113013.

It can be written as a sum of positive squares in 4 ways, for example, as 27720993695329 + 3310136306884 = 5265073^2 + 1819378^2 .

It is not a de Polignac number, because 31031130002213 - 2⁶ = 31031130002149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031130008213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33860858 + ... + 34765211.

It is an arithmetic number, because the mean of its divisors is an integer number (1474053670565).

Almost surely, 2^{31031130002213} is an apocalyptic number.

It is an amenable number.

31031130002213 is a deficient number, since it is larger than the sum of its proper divisors (4346158091347).

31031130002213 is a wasteful number, since it uses less digits than its factorization.

31031130002213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68626229 (or 68626218 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31031130002213 its reverse (31220003113013), we get a palindrome (62251133115226).

The spelling of 31031130002213 in words is "thirty-one trillion, thirty-one billion, one hundred thirty million, two thousand, two hundred thirteen".