31101130213 has 8 divisors (see below), whose sum is σ = 31335913368. Its totient is φ = 30866459904.

The previous prime is 31101130211. The next prime is 31101130217. The reversal of 31101130213 is 31203110113.

It can be written as a sum of positive squares in 4 ways, for example, as 5795320129 + 25305810084 = 76127^2 + 159078^2 .

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 31101130213 - 2¹ = 31101130211 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 (31101130211) 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, 573145 + ... + 625057.

It is an arithmetic number, because the mean of its divisors is an integer number (3916989171).

Almost surely, 2^31101130213 is an apocalyptic number.

It is an amenable number.

31101130213 is a deficient number, since it is larger than the sum of its proper divisors (234783155).

31101130213 is a wasteful number, since it uses less digits than its factorization.

31101130213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56423.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31101130213 its reverse (31203110113), we get a palindrome (62304240326).

The spelling of 31101130213 in words is "thirty-one billion, one hundred one million, one hundred thirty thousand, two hundred thirteen".