31252225213 has 12 divisors (see below), whose sum is σ = 36372305340. Its totient is φ = 26739870080.

The previous prime is 31252225211. The next prime is 31252225219.

31252225213 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 28373044249 + 2879180964 = 168443^2 + 53658^2 .

It is not a de Polignac number, because 31252225213 - 2¹ = 31252225211 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 (31252225211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7594498 + ... + 7598611.

It is an arithmetic number, because the mean of its divisors is an integer number (3031025445).

Almost surely, 2^31252225213 is an apocalyptic number.

It is an amenable number.

31252225213 is a deficient number, since it is larger than the sum of its proper divisors (5120080127).

31252225213 is a wasteful number, since it uses less digits than its factorization.

31252225213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15193148 (or 15193137 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The spelling of 31252225213 in words is "thirty-one billion, two hundred fifty-two million, two hundred twenty-five thousand, two hundred thirteen".