31545083850481 has 2 divisors, whose sum is σ = 31545083850482. Its totient is φ = 31545083850480.

The previous prime is 31545083850461. The next prime is 31545083850487. The reversal of 31545083850481 is 18405838054513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15787836038881 + 15757247811600 = 3973391^2 + 3969540^2 .

It is a cyclic number.

It is not a de Polignac number, because 31545083850481 - 2¹³ = 31545083842289 is a prime.

It is a super-2 number, since 2×31545083850481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31545083850487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15772541925240 + 15772541925241.

It is an arithmetic number, because the mean of its divisors is an integer number (15772541925241).

Almost surely, 2^{31545083850481} is an apocalyptic number.

It is an amenable number.

31545083850481 is a deficient number, since it is larger than the sum of its proper divisors (1).

31545083850481 is an equidigital number, since it uses as much as digits as its factorization.

31545083850481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216000, while the sum is 55.

The spelling of 31545083850481 in words is "thirty-one trillion, five hundred forty-five billion, eighty-three million, eight hundred fifty thousand, four hundred eighty-one".