31054515109 has 2 divisors, whose sum is σ = 31054515110. Its totient is φ = 31054515108.

The previous prime is 31054515101. The next prime is 31054515119. The reversal of 31054515109 is 90151545013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30944328100 + 110187009 = 175910^2 + 10497^2 .

It is a cyclic number.

It is not a de Polignac number, because 31054515109 - 2³ = 31054515101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31054515101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15527257554 + 15527257555.

It is an arithmetic number, because the mean of its divisors is an integer number (15527257555).

Almost surely, 2^31054515109 is an apocalyptic number.

It is an amenable number.

31054515109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31054515109 is an equidigital number, since it uses as much as digits as its factorization.

31054515109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 31054515109 in words is "thirty-one billion, fifty-four million, five hundred fifteen thousand, one hundred nine".