31255305553 has 24 divisors (see below), whose sum is σ = 34172133120. Its totient is φ = 28523386080.

The previous prime is 31255305551. The next prime is 31255305559. The reversal of 31255305553 is 35550355213.

It is not a de Polignac number, because 31255305553 - 2¹ = 31255305551 is a prime.

It is a super-2 number, since 2×31255305553² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31255305551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1652850 + ... + 1671652.

It is an arithmetic number, because the mean of its divisors is an integer number (1423838880).

Almost surely, 2^31255305553 is an apocalyptic number.

It is an amenable number.

31255305553 is a deficient number, since it is larger than the sum of its proper divisors (2916827567).

31255305553 is a wasteful number, since it uses less digits than its factorization.

31255305553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18949 (or 18906 counting only the distinct ones).

The product of its (nonzero) digits is 168750, while the sum is 37.

The spelling of 31255305553 in words is "thirty-one billion, two hundred fifty-five million, three hundred five thousand, five hundred fifty-three".