31454352040544 has 24 divisors (see below), whose sum is σ = 61928916775488. Its totient is φ = 15726373176960.

The previous prime is 31454352040543. The next prime is 31454352040591. The reversal of 31454352040544 is 44504025345413.

It is a junction number, because it is equal to n+sod(n) for n = 31454352040495 and 31454352040504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454352040543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24451952 + ... + 25706159.

It is an arithmetic number, because the mean of its divisors is an integer number (2580371532312).

Almost surely, 2^{31454352040544} is an apocalyptic number.

It is an amenable number.

31454352040544 is a deficient number, since it is larger than the sum of its proper divisors (30474564734944).

31454352040544 is a wasteful number, since it uses less digits than its factorization.

31454352040544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50177718 (or 50177710 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 44.

Adding to 31454352040544 its reverse (44504025345413), we get a palindrome (75958377385957).

The spelling of 31454352040544 in words is "thirty-one trillion, four hundred fifty-four billion, three hundred fifty-two million, forty thousand, five hundred forty-four".