31552136536541 has 2 divisors, whose sum is σ = 31552136536542. Its totient is φ = 31552136536540.

The previous prime is 31552136536517. The next prime is 31552136536603. The reversal of 31552136536541 is 14563563125513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22376211122500 + 9175925414041 = 4730350^2 + 3029179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31552136536541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31552136536541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31552136536441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15776068268270 + 15776068268271.

It is an arithmetic number, because the mean of its divisors is an integer number (15776068268271).

Almost surely, 2^{31552136536541} is an apocalyptic number.

It is an amenable number.

31552136536541 is a deficient number, since it is larger than the sum of its proper divisors (1).

31552136536541 is an equidigital number, since it uses as much as digits as its factorization.

31552136536541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860000, while the sum is 50.

The spelling of 31552136536541 in words is "thirty-one trillion, five hundred fifty-two billion, one hundred thirty-six million, five hundred thirty-six thousand, five hundred forty-one".