31144020335055 has 24 divisors (see below), whose sum is σ = 53983333574352. Its totient is φ = 16610031873024.

The previous prime is 31144020335011. The next prime is 31144020335189. The reversal of 31144020335055 is 55053302044113.

31144020335055 is a `hidden beast` number, since 3 + 1 + 1 + 440 + 203 + 3 + 5 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 31144020335055 - 2¹¹ = 31144020333007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4617112 + ... + 9143618.

It is an arithmetic number, because the mean of its divisors is an integer number (2249305565598).

Almost surely, 2^{31144020335055} is an apocalyptic number.

31144020335055 is a deficient number, since it is larger than the sum of its proper divisors (22839313239297).

31144020335055 is a wasteful number, since it uses less digits than its factorization.

31144020335055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679415 (or 4679412 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 31144020335055 its reverse (55053302044113), we get a palindrome (86197322379168).

The spelling of 31144020335055 in words is "thirty-one trillion, one hundred forty-four billion, twenty million, three hundred thirty-five thousand, fifty-five".