31131330127 has 2 divisors, whose sum is σ = 31131330128. Its totient is φ = 31131330126.

The previous prime is 31131330107. The next prime is 31131330133. The reversal of 31131330127 is 72103313113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31131330127 - 2¹¹ = 31131328079 is a prime.

It is a super-2 number, since 2×31131330127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31131330107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565665063 + 15565665064.

It is an arithmetic number, because the mean of its divisors is an integer number (15565665064).

Almost surely, 2^31131330127 is an apocalyptic number.

31131330127 is a deficient number, since it is larger than the sum of its proper divisors (1).

31131330127 is an equidigital number, since it uses as much as digits as its factorization.

31131330127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 25.

The spelling of 31131330127 in words is "thirty-one billion, one hundred thirty-one million, three hundred thirty thousand, one hundred twenty-seven".