31463626553389 has 2 divisors, whose sum is σ = 31463626553390. Its totient is φ = 31463626553388.

The previous prime is 31463626553327. The next prime is 31463626553431. The reversal of 31463626553389 is 98335562636413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17967679768900 + 13495946784489 = 4238830^2 + 3673683^2 .

It is an emirp because it is prime and its reverse (98335562636413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31463626553389 - 2⁹ = 31463626552877 is a prime.

It is a super-2 number, since 2×31463626553389² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31463626553389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31463626554389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15731813276694 + 15731813276695.

It is an arithmetic number, because the mean of its divisors is an integer number (15731813276695).

Almost surely, 2^{31463626553389} is an apocalyptic number.

It is an amenable number.

31463626553389 is a deficient number, since it is larger than the sum of its proper divisors (1).

31463626553389 is an equidigital number, since it uses as much as digits as its factorization.

31463626553389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 251942400, while the sum is 64.

The spelling of 31463626553389 in words is "thirty-one trillion, four hundred sixty-three billion, six hundred twenty-six million, five hundred fifty-three thousand, three hundred eighty-nine".