31054220101 has 2 divisors, whose sum is σ = 31054220102. Its totient is φ = 31054220100.

The previous prime is 31054220083. The next prime is 31054220143. The reversal of 31054220101 is 10102245013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30720975076 + 333245025 = 175274^2 + 18255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31054220101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31054820101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15527110050 + 15527110051.

It is an arithmetic number, because the mean of its divisors is an integer number (15527110051).

Almost surely, 2^31054220101 is an apocalyptic number.

It is an amenable number.

31054220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31054220101 is an equidigital number, since it uses as much as digits as its factorization.

31054220101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 31054220101 its reverse (10102245013), we get a palindrome (41156465114).

The spelling of 31054220101 in words is "thirty-one billion, fifty-four million, two hundred twenty thousand, one hundred one".