31105559023104 has 160 divisors (see below), whose sum is σ = 83342982270240. Its totient is φ = 10309143756800.

The previous prime is 31105559023069. The next prime is 31105559023111. The reversal of 31105559023104 is 40132095550113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198896812 + ... + 199053140.

It is an arithmetic number, because the mean of its divisors is an integer number (520893639189).

Almost surely, 2^{31105559023104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31105559023104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41671491135120).

31105559023104 is an abundant number, since it is smaller than the sum of its proper divisors (52237423247136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31105559023104 is a wasteful number, since it uses less digits than its factorization.

31105559023104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157092 (or 157076 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 31105559023104 in words is "thirty-one trillion, one hundred five billion, five hundred fifty-nine million, twenty-three thousand, one hundred four".