31352726643 has 16 divisors (see below), whose sum is σ = 47793609216. Its totient is φ = 17909084160.

The previous prime is 31352726617. The next prime is 31352726681. The reversal of 31352726643 is 34662725313.

It is not a de Polignac number, because 31352726643 - 2¹⁸ = 31352464499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31352726595 and 31352726604.

It is not an unprimeable number, because it can be changed into a prime (31352726683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224398 + ... + 336243.

It is an arithmetic number, because the mean of its divisors is an integer number (2987100576).

Almost surely, 2^31352726643 is an apocalyptic number.

31352726643 is a deficient number, since it is larger than the sum of its proper divisors (16440882573).

31352726643 is a wasteful number, since it uses less digits than its factorization.

31352726643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563314.

The product of its digits is 544320, while the sum is 42.

The spelling of 31352726643 in words is "thirty-one billion, three hundred fifty-two million, seven hundred twenty-six thousand, six hundred forty-three".