31477201541 has 2 divisors, whose sum is σ = 31477201542. Its totient is φ = 31477201540.

The previous prime is 31477201519. The next prime is 31477201603. The reversal of 31477201541 is 14510277413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27267916900 + 4209284641 = 165130^2 + 64879^2 .

It is a cyclic number.

It is not a de Polignac number, because 31477201541 - 2³⁰ = 30403459717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31477201501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15738600770 + 15738600771.

It is an arithmetic number, because the mean of its divisors is an integer number (15738600771).

Almost surely, 2^31477201541 is an apocalyptic number.

It is an amenable number.

31477201541 is a deficient number, since it is larger than the sum of its proper divisors (1).

31477201541 is an equidigital number, since it uses as much as digits as its factorization.

31477201541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 31477201541 its reverse (14510277413), we get a palindrome (45987478954).

The spelling of 31477201541 in words is "thirty-one billion, four hundred seventy-seven million, two hundred one thousand, five hundred forty-one".