31054540340557 has 2 divisors, whose sum is σ = 31054540340558. Its totient is φ = 31054540340556.

The previous prime is 31054540340459. The next prime is 31054540340563. The reversal of 31054540340557 is 75504304545013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23341594966596 + 7712945373961 = 4831314^2 + 2777219^2 .

It is a cyclic number.

It is not a de Polignac number, because 31054540340557 - 2⁷ = 31054540340429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31054540340587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15527270170278 + 15527270170279.

It is an arithmetic number, because the mean of its divisors is an integer number (15527270170279).

Almost surely, 2^{31054540340557} is an apocalyptic number.

It is an amenable number.

31054540340557 is a deficient number, since it is larger than the sum of its proper divisors (1).

31054540340557 is an equidigital number, since it uses as much as digits as its factorization.

31054540340557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520000, while the sum is 46.

The spelling of 31054540340557 in words is "thirty-one trillion, fifty-four billion, five hundred forty million, three hundred forty thousand, five hundred fifty-seven".