131211007 has 2 divisors, whose sum is σ = 131211008. Its totient is φ = 131211006.

The previous prime is 131210999. The next prime is 131211013. The reversal of 131211007 is 700112131.

It is a strong prime.

It is an emirp because it is prime and its reverse (700112131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131211007 - 2³ = 131210999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131211097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65605503 + 65605504.

It is an arithmetic number, because the mean of its divisors is an integer number (65605504).

Almost surely, 2^131211007 is an apocalyptic number.

131211007 is a deficient number, since it is larger than the sum of its proper divisors (1).

131211007 is an equidigital number, since it uses as much as digits as its factorization.

131211007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 131211007 is about 11454.7373169357. The cubic root of 131211007 is about 508.1478466378.

Adding to 131211007 its reverse (700112131), we get a palindrome (831323138).

The spelling of 131211007 in words is "one hundred thirty-one million, two hundred eleven thousand, seven".