31100131129 has 2 divisors, whose sum is σ = 31100131130. Its totient is φ = 31100131128.

The previous prime is 31100131121. The next prime is 31100131151. The reversal of 31100131129 is 92113100113.

It is an a-pointer prime, because the next prime (31100131151) can be obtained adding 31100131129 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23085763600 + 8014367529 = 151940^2 + 89523^2 .

It is a cyclic number.

It is not a de Polignac number, because 31100131129 - 2³ = 31100131121 is a prime.

It is a super-3 number, since 3×31100131129³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31100131121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550065564 + 15550065565.

It is an arithmetic number, because the mean of its divisors is an integer number (15550065565).

Almost surely, 2^31100131129 is an apocalyptic number.

It is an amenable number.

31100131129 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100131129 is an equidigital number, since it uses as much as digits as its factorization.

31100131129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The spelling of 31100131129 in words is "thirty-one billion, one hundred million, one hundred thirty-one thousand, one hundred twenty-nine".