31385244258313 has 24 divisors (see below), whose sum is σ = 34694121155400. Its totient is φ = 28370111489280.

The previous prime is 31385244258299. The next prime is 31385244258331.

31385244258313 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 32994179449 + 31352250078864 = 181643^2 + 5599308^2 .

It is not a de Polignac number, because 31385244258313 - 2¹³ = 31385244250121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31385244258343) 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, 15620245 + ... + 17514637.

It is an arithmetic number, because the mean of its divisors is an integer number (1445588381475).

Almost surely, 2^{31385244258313} is an apocalyptic number.

It is an amenable number.

31385244258313 is a deficient number, since it is larger than the sum of its proper divisors (3308876897087).

31385244258313 is a wasteful number, since it uses less digits than its factorization.

31385244258313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895193 (or 1895182 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The spelling of 31385244258313 in words is "thirty-one trillion, three hundred eighty-five billion, two hundred forty-four million, two hundred fifty-eight thousand, three hundred thirteen".