31005485589 has 64 divisors (see below), whose sum is σ = 46780283648. Its totient is φ = 18139852800.

The previous prime is 31005485531. The next prime is 31005485657. The reversal of 31005485589 is 98558450013.

It is a happy number.

It is not a de Polignac number, because 31005485589 - 2²³ = 30997096981 is a prime.

It is a super-2 number, since 2×31005485589² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31005485389) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14346669 + ... + 14348829.

It is an arithmetic number, because the mean of its divisors is an integer number (730941932).

Almost surely, 2^31005485589 is an apocalyptic number.

31005485589 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

31005485589 is a deficient number, since it is larger than the sum of its proper divisors (15774798059).

31005485589 is a wasteful number, since it uses less digits than its factorization.

31005485589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438.

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 31005485589 in words is "thirty-one billion, five million, four hundred eighty-five thousand, five hundred eighty-nine".