31103130223201 has 4 divisors (see below), whose sum is σ = 31127486630292. Its totient is φ = 31078773816112.

The previous prime is 31103130223189. The next prime is 31103130223223. The reversal of 31103130223201 is 10232203130113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13161331901025 + 17941798322176 = 3627855^2 + 4235776^2 .

It is a cyclic number.

It is not a de Polignac number, because 31103130223201 - 2¹⁷ = 31103130092129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31103130223301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12178201630 + ... + 12178204183.

It is an arithmetic number, because the mean of its divisors is an integer number (7781871657573).

Almost surely, 2^{31103130223201} is an apocalyptic number.

It is an amenable number.

31103130223201 is a deficient number, since it is larger than the sum of its proper divisors (24356407091).

31103130223201 is a wasteful number, since it uses less digits than its factorization.

31103130223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24356407090.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31103130223201 its reverse (10232203130113), we get a palindrome (41335333353314).

The spelling of 31103130223201 in words is "thirty-one trillion, one hundred three billion, one hundred thirty million, two hundred twenty-three thousand, two hundred one".