131043031 has 4 divisors (see below), whose sum is σ = 149763472. Its totient is φ = 112322592.

The previous prime is 131042993. The next prime is 131043041. The reversal of 131043031 is 130340131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131043031 - 2¹¹ = 131040983 is a prime.

It is a super-2 number, since 2×131043031² = 34344551947333922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131042996 and 131043014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131043041) 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 in 3 ways as a sum of consecutive naturals, for example, 9360210 + ... + 9360223.

It is an arithmetic number, because the mean of its divisors is an integer number (37440868).

Almost surely, 2^131043031 is an apocalyptic number.

131043031 is a deficient number, since it is larger than the sum of its proper divisors (18720441).

131043031 is an equidigital number, since it uses as much as digits as its factorization.

131043031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18720440.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131043031 is about 11447.4028058770. The cubic root of 131043031 is about 507.9309108410.

Adding to 131043031 its reverse (130340131), we get a palindrome (261383162).

The spelling of 131043031 in words is "one hundred thirty-one million, forty-three thousand, thirty-one".