31475001601 has 2 divisors, whose sum is σ = 31475001602. Its totient is φ = 31475001600.

The previous prime is 31475001527. The next prime is 31475001617. The reversal of 31475001601 is 10610057413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25767954576 + 5707047025 = 160524^2 + 75545^2 .

It is an emirp because it is prime and its reverse (10610057413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31475001601 - 2¹³ = 31474993409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31475001601.

It is not a weakly prime, because it can be changed into another prime (31475001671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15737500800 + 15737500801.

It is an arithmetic number, because the mean of its divisors is an integer number (15737500801).

Almost surely, 2^31475001601 is an apocalyptic number.

It is an amenable number.

31475001601 is a deficient number, since it is larger than the sum of its proper divisors (1).

31475001601 is an equidigital number, since it uses as much as digits as its factorization.

31475001601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The spelling of 31475001601 in words is "thirty-one billion, four hundred seventy-five million, one thousand, six hundred one".