31541541542141 has 2 divisors, whose sum is σ = 31541541542142. Its totient is φ = 31541541542140.

The previous prime is 31541541542129. The next prime is 31541541542153. The reversal of 31541541542141 is 14124514514513.

It is a balanced prime because it is at equal distance from previous prime (31541541542129) and next prime (31541541542153).

It can be written as a sum of positive squares in only one way, i.e., 22502974312900 + 9038567229241 = 4743730^2 + 3006421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31541541542141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31541541542191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15770770771070 + 15770770771071.

It is an arithmetic number, because the mean of its divisors is an integer number (15770770771071).

Almost surely, 2^{31541541542141} is an apocalyptic number.

It is an amenable number.

31541541542141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31541541542141 is an equidigital number, since it uses as much as digits as its factorization.

31541541542141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192000, while the sum is 41.

The spelling of 31541541542141 in words is "thirty-one trillion, five hundred forty-one billion, five hundred forty-one million, five hundred forty-two thousand, one hundred forty-one".