131143031 has 2 divisors, whose sum is σ = 131143032. Its totient is φ = 131143030.

The previous prime is 131143027. The next prime is 131143037. The reversal of 131143031 is 130341131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131143031 - 2² = 131143027 is a prime.

It is a super-2 number, since 2×131143031² = 34396989159733922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131143037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65571515 + 65571516.

It is an arithmetic number, because the mean of its divisors is an integer number (65571516).

Almost surely, 2^131143031 is an apocalyptic number.

131143031 is a deficient number, since it is larger than the sum of its proper divisors (1).

131143031 is an equidigital number, since it uses as much as digits as its factorization.

131143031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 131143031 is about 11451.7697758905. The cubic root of 131143031 is about 508.0600800560.

Adding to 131143031 its reverse (130341131), we get a palindrome (261484162).

The spelling of 131143031 in words is "one hundred thirty-one million, one hundred forty-three thousand, thirty-one".